再发一贴：还是取gridview“列索引值” 为了把这个问题整明白放100分

注意是列索引为什么要获得列索引：因为我要在下面事件中根据列索引去隐藏列可是我只知道绑定列的字段名不知道这个字段的cells索引值
（因为列是自动创建的所以无法去数他的cells是第几）protected void GridView1_RowCreated(object sender, GridViewRowEventArgs e)
    {
        if (e.Row.RowType == DataControlRowType.DataRow ||
        e.Row.RowType == DataControlRowType.Header)
        {
            e.Row.Cells[这个值怎么根据字段名得到].Visible = false; //
        }
    }由于绑定gridview的列是自动创建的用下面方法试过了自动创建的列在下面这个事件里面是找不到e.Row.Cells[i].Text的文本值这个值永远为空protected void gv_RowDataBound(object sender, GridViewRowEventArgs e)
    {
        int index = -1;
        if (e.Row.RowType == DataControlRowType.Header)
        {
            for (int i = 0; i < e.Row.Cells.Count; i++)
            {
                 // 不是字段名，是字段对应的列的列名
                if (e.Row.Cells[i].Text == "特定列名")
                {
                    e.Row.Cells[i].Visible = false;
                    index = i;
                }
            }
        }
        else if (e.Row.RowType == DataControlRowType.DataRow)
        {
            for (int i = 0; i < e.Row.Cells.Count; i++)
            {
                if (i == index)
                {
                    e.Row.Cells[i].Visible = false;
                }
            }
        }
}

解决方案 »

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已经为了这个问题发了一个帖子请高手不吝赐教
http://topic.csdn.net/u/20080514/11/f8eb3b16-9df3-4eb7-bb22-32fb600b7212.html?956222352#replyachor
<%@ Page Language="C#" AutoEventWireup="true" CodeFile="testGridView.aspx.cs" Inherits="testGridView" %><!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"><html xmlns="http://www.w3.org/1999/xhtml" >
<head runat="server">
    <title>无标题页</title>
</head>
<body>
    <form id="form1" runat="server">
    <div>
        <asp:GridView ID="gv" runat="server" AutoGenerateColumns="False" OnRowDataBound="gv_RowDataBound">
        </asp:GridView>

    </div>
    </form>
</body>
</html>
using System;
using System.Data;
using System.Configuration;
using System.Collections;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Web.UI.HtmlControls;public partial class testGridView : System.Web.UI.Page
{
    int index = -1;
    protected DataTable getDataTable()
    {        System.Data.DataTable dt = new System.Data.DataTable();
        System.Data.DataRow dr;
        dt.Columns.Add(new System.Data.DataColumn("Name", typeof(System.String)));
        dt.Columns.Add(new System.Data.DataColumn("Unit", typeof(System.String)));
        dt.Columns.Add(new System.Data.DataColumn("Standard", typeof(System.String)));
        dt.Columns.Add(new System.Data.DataColumn("Quantity", typeof(System.Int32)));
        dr = dt.NewRow();
        dr[0] = "黑色圆珠笔";
        dr[1] = "枝";
        dr[2] = "2*2";
        dr[3] = 10;
        dt.Rows.Add(dr);
        dr = dt.NewRow();
        dr[0] = "红色圆珠笔";
        dr[1] = "枝";
        dr[2] = "2*2";
        dr[3] = 15;
        dt.Rows.Add(dr);
        dr = dt.NewRow();
        dr[0] = "黄色圆珠笔";
        dr[1] = "枝";
        dr[2] = "2*2";
        dr[3] = 20;
        dt.Rows.Add(dr);
        dr = dt.NewRow();
        dr[0] = "蓝色圆珠笔";
        dr[1] = "枝";
        dr[2] = "2*2";
        dr[3] = 18;
        dt.Rows.Add(dr);
        dr = dt.NewRow();
        dr[0] = "辰光签字笔";
        dr[1] = "枝";
        dr[2] = "2*2";
        dr[3] = 15;
        dt.Rows.Add(dr);
        return dt;
    }    private void createColumn(GridView gv)
    {
        BoundField bf = new BoundField();
        bf.HeaderText = "名称";
        bf.DataField = "Name";
        gv.Columns.Add(bf);
        bf = new BoundField();
        bf.HeaderText = "单位";
        bf.DataField = "Unit";
        gv.Columns.Add(bf);
        bf = new BoundField();
        bf.HeaderText = "数量";
        bf.DataField = "Quantity";
        gv.Columns.Add(bf);
    }    protected void Page_Load(object sender, EventArgs e)
    {
        if (!IsPostBack)
        {
            createColumn(gv);
            gv.DataSource = getDataTable();
            gv.DataBind();
        }
    }
    protected void gv_RowDataBound(object sender, GridViewRowEventArgs e)
    {

        if (e.Row.RowType == DataControlRowType.Header)
        {
            for (int i = 0; i < e.Row.Cells.Count; i++)
            {
                // 不是字段名，是字段对应的列的列名
                if (e.Row.Cells[i].Text == "名称")
                {
                    e.Row.Cells[i].Visible = false;
                    index = i;
                }
            }
        }
        else if (e.Row.RowType == DataControlRowType.DataRow)
        {
            for (int i = 0; i < e.Row.Cells.Count; i++)
            {
                if (i == index)
                {
                    e.Row.Cells[i].Visible = false;
                }
            }
        }    }
}
OnDataBound：
    protected void GridView1_DataBound(object sender, EventArgs e)
    {
        for (int i = 0; i < GridView1.HeaderRow.Cells.Count; i++)
        {
            if (GridView1.HeaderRow.Cells[i].Text == "字段名")
                GridView1.Columns[i].Visible = false;
        }
    }
当时回复你那个帖子没测试，有个逻辑错误。
int index = -1;
位置的问题。这回你试下
我的gridview的这个属性是 AutoGenerateColumns="True" 这会影响你上面的例子的效果吗？
======这个你测试了？好像index现在变成没定义了吧？
那你就需要根据数据源例如datatable的列名来控制了
if (e.Row.Cells[i].Text == "名称")下面这个是控制数据源中列名为Name 的if (e.Row.Cells[i].Text == "Name")
int index = -1;
    protected DataTable getDataTable()
    {没注意吧？
你说的是不是这东西？
GridView1.DataKeyNames = new string[] { "ID" };
学习楼主的学习精神！！
还是一样不行。。固定的几列能得到头名可是后面自动创建的列 if (e.Row.Cells[i].Text == "")的值都是为空<asp:GridView ID="GridView1" runat="server" OnSorting="GridView1_Sorting" AllowSorting="True"                                    Width="100%" OnRowCommand="GridView1_RowCommand" OnRowDataBound="GridView1_RowDataBound"
                                    CssClass="border" OnRowCreated="GridView1_RowCreated">
                                    <AlternatingRowStyle HorizontalAlign="Center" CssClass="dbtable_data1" />
                                    <RowStyle HorizontalAlign="Center" CssClass="dbtable_data2" VerticalAlign="Middle"></RowStyle>
                                    <HeaderStyle CssClass="dbtable_title"></HeaderStyle>
                                    <FooterStyle HorizontalAlign="Center" VerticalAlign="Middle"></FooterStyle>
                                    <Columns>
                                        <asp:TemplateField HeaderText="编号">
                                        <HeaderStyle Width="2px" />
                                        <ItemStyle Width="2px" />
                                            <ItemTemplate>
                                                <asp:Label ID="lblNum" runat="server" Text='<%# Container.DataItemIndex + 1 %>'></asp:Label>
                                            </ItemTemplate>
                                        </asp:TemplateField>
                                        <asp:TemplateField HeaderText="编辑">
                                            <HeaderStyle Width="40px" />
                                            <ItemTemplate>
                                                <asp:LinkButton ID="LinkButtonEdit" runat="server" CommandName="edititem" CommandArgument='<%# Eval(PKField) %>'>
                                                    <asp:Image runat="server" AlternateText="编辑" ID="Image1" ImageUrl="~/img/modify.gif">
                                                    </asp:Image>
                                                </asp:LinkButton>
                                            </ItemTemplate>
                                        </asp:TemplateField>
                                        <asp:TemplateField HeaderText="删除">
                                            <HeaderStyle Width="40px"></HeaderStyle>
                                            <ItemTemplate>
                                                <asp:LinkButton ID="LinkButtonDelete" runat="server" CommandName="deleteitem" CommandArgument='<%# Eval(PKField) %>'>
                                                    <asp:Image ID="Image2" runat="server" ImageUrl="~/img/delete.gif" AlternateText="删除">
                                                    </asp:Image>
                                                </asp:LinkButton>
                                            </ItemTemplate>
                                        </asp:TemplateField>
                                        <asp:TemplateField HeaderText="查看">
                                            <HeaderStyle Width="40px"></HeaderStyle>
                                            <ItemTemplate>
                                                <asp:LinkButton ID="LinkButtonLook" runat="server" CommandName="lookitem" CommandArgument='<%# Eval(PKField) %>'>
                                                    <asp:Image ID="Image3" runat="server" ImageUrl="~/img/look.gif" AlternateText="查看详细">
                                                    </asp:Image>
                                                </asp:LinkButton>
                                            </ItemTemplate>
                                        </asp:TemplateField>
                                       </Columns>
                                    <SelectedRowStyle BackColor="Cyan" CssClass="dbtable_data3" />
                                </asp:GridView>
不是这个问题。。是绑定完一个自动创建列后的gridview怎么去隐藏某一个列。。
我知道是要用数据源中列名关键是。。e.Row.Cells[i].Text 得到值都是为空不知道你有没有试着跟踪看下这个值。。（除了前面几个固定的模板列，后面自动创建的列这个值全部是为空的不知道在RowDataBound事件里面是不是无法得到自动创建的列的这个值？
你运行我写的DEMO了么我也是动态创建的列。问题的关键是动态创建的列，你需要给它指定列名不指定的话，它当然是空了。指定列名就两个办法一是指定GridView中的列的列名二是指定绑定数据源的列名根据指定的列名在去判断做操作
==========关键是这个属性AutoGenerateColumns="False" 你把这个改为true你就知道我说的是什么意思啦数据源取出来后直接自动创建列。。
<%@ Page Language="C#" AutoEventWireup="true" CodeFile="testGridView.aspx.cs" Inherits="testGridView" %><!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"><html xmlns="http://www.w3.org/1999/xhtml" >
<head runat="server">
    <title>无标题页</title>
</head>
<body>
    <form id="form1" runat="server">
    <div>
        <asp:GridView ID="gv" runat="server" AutoGenerateColumns="true" OnRowDataBound="gv_RowDataBound">
        </asp:GridView>

    </div>
    </form>
</body>
</html>using System;
using System.Data;
using System.Configuration;
using System.Collections;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Web.UI.HtmlControls;public partial class testGridView : System.Web.UI.Page
{
    string index = "";
    string columnStr = "";    protected DataTable getDataTable()
    {        System.Data.DataTable dt = new System.Data.DataTable();
        System.Data.DataRow dr;
        dt.Columns.Add(new System.Data.DataColumn("Name", typeof(System.String)));
        dt.Columns.Add(new System.Data.DataColumn("Unit", typeof(System.String)));
        dt.Columns.Add(new System.Data.DataColumn("Standard", typeof(System.String)));
        dt.Columns.Add(new System.Data.DataColumn("Quantity", typeof(System.Int32)));
        dr = dt.NewRow();
        dr[0] = "黑色圆珠笔";
        dr[1] = "枝";
        dr[2] = "2*2";
        dr[3] = 10;
        dt.Rows.Add(dr);
        dr = dt.NewRow();
        dr[0] = "红色圆珠笔";
        dr[1] = "枝";
        dr[2] = "2*2";
        dr[3] = 15;
        dt.Rows.Add(dr);
        dr = dt.NewRow();
        dr[0] = "黄色圆珠笔";
        dr[1] = "枝";
        dr[2] = "2*2";
        dr[3] = 20;
        dt.Rows.Add(dr);
        dr = dt.NewRow();
        dr[0] = "蓝色圆珠笔";
        dr[1] = "枝";
        dr[2] = "2*2";
        dr[3] = 18;
        dt.Rows.Add(dr);
        dr = dt.NewRow();
        dr[0] = "辰光签字笔";
        dr[1] = "枝";
        dr[2] = "2*2";
        dr[3] = 15;
        dt.Rows.Add(dr);
        return dt;
    }    private void createColumn(GridView gv)
    {
        BoundField bf = new BoundField();
        bf.HeaderText = "名称";
        bf.DataField = "Name";
        gv.Columns.Add(bf);
        bf = new BoundField();
        bf.HeaderText = "单位";
        bf.DataField = "Unit";
        gv.Columns.Add(bf);
        bf = new BoundField();
        bf.HeaderText = "数量";
        bf.DataField = "Quantity";
        gv.Columns.Add(bf);
    }    protected void Page_Load(object sender, EventArgs e)
    {
        if (!IsPostBack)
        {
            //设置要隐藏列的列名
            columnStr = "Name,名称";
            createColumn(gv);
            gv.DataSource = getDataTable();
            gv.DataBind();
        }
    }
    protected void gv_RowDataBound(object sender, GridViewRowEventArgs e)
    {

        if (e.Row.RowType == DataControlRowType.Header)
        {
            for (int i = 0; i < e.Row.Cells.Count; i++)
            {
                // 不是字段名，是字段对应的列的列名
                if (columnStr.Contains(e.Row.Cells[i].Text))// == "单位")
                {
                    e.Row.Cells[i].Visible = false;
                    index += "," + i;
                }
            }
        }
        else if (e.Row.RowType == DataControlRowType.DataRow)
        {
            for (int i = 0; i < e.Row.Cells.Count; i++)
            {
                if (index.Contains(i.ToString()))
                {
                    e.Row.Cells[i].Visible = false;
                }
            }
        }    }
}
<asp:GridView ID="GridView1" runat="server" OnSorting="GridView1_Sorting" AllowSorting="True"  Width="100%" OnRowCommand="GridView1_RowCommand" OnRowDataBound="GridView1_RowDataBound"
                                    CssClass="border" OnRowCreated="GridView1_RowCreated">
                                    <AlternatingRowStyle HorizontalAlign="Center" CssClass="dbtable_data1" />
                                    <RowStyle HorizontalAlign="Center" CssClass="dbtable_data2" VerticalAlign="Middle"></RowStyle>
                                    <HeaderStyle CssClass="dbtable_title"></HeaderStyle>
                                    <FooterStyle HorizontalAlign="Center" VerticalAlign="Middle"></FooterStyle>
                                    <Columns>
                                        <asp:TemplateField HeaderText="编号">
                                        <HeaderStyle Width="2px" />
                                        <ItemStyle Width="2px" />
                                            <ItemTemplate>
                                                <asp:Label ID="lblNum" runat="server" Text='<%# Container.DataItemIndex + 1 %>'></asp:Label>
                                            </ItemTemplate>
                                        </asp:TemplateField>
                                        <asp:TemplateField HeaderText="编辑">
                                            <HeaderStyle Width="40px" />
                                            <ItemTemplate>
                                                <asp:LinkButton ID="LinkButtonEdit" runat="server" CommandName="edititem" CommandArgument='<%# Eval(PKField) %>'>
                                                    <asp:Image runat="server" AlternateText="编辑" ID="Image1" ImageUrl="~/img/modify.gif">
                                                    </asp:Image>
                                                </asp:LinkButton>
                                            </ItemTemplate>
                                        </asp:TemplateField>
                                        <asp:TemplateField HeaderText="删除">
                                            <HeaderStyle Width="40px"></HeaderStyle>
                                            <ItemTemplate>
                                                <asp:LinkButton ID="LinkButtonDelete" runat="server" CommandName="deleteitem" CommandArgument='<%# Eval(PKField) %>'>
                                                    <asp:Image ID="Image2" runat="server" ImageUrl="~/img/delete.gif" AlternateText="删除">
                                                    </asp:Image>
                                                </asp:LinkButton>
                                            </ItemTemplate>
                                        </asp:TemplateField>
                                        <asp:TemplateField HeaderText="查看">
                                            <HeaderStyle Width="40px"></HeaderStyle>
                                            <ItemTemplate>
                                                <asp:LinkButton ID="LinkButtonLook" runat="server" CommandName="lookitem" CommandArgument='<%# Eval(PKField) %>'>
                                                    <asp:Image ID="Image3" runat="server" ImageUrl="~/img/look.gif" AlternateText="查看详细">
                                                    </asp:Image>
                                                </asp:LinkButton>
                                            </ItemTemplate>
                                        </asp:TemplateField>
                                       </Columns>
                                    <SelectedRowStyle BackColor="Cyan" CssClass="dbtable_data3" />
                                </asp:GridView>
用上面这个gridview去绑定pubs数据库里面的titles表的title列你就会发现我说的问题。。
其实我在7楼就已经答复你了~
不过上面这个DEMO 需要注意一个地方就是当GridView的列超过10列时
需要换一个算法，来判断要隐藏那几列因为现在是用字符串的方法来判断
用上面这个gridview去绑定pubs数据库里面的titles表的title列你就会发现我说的问题。。>>用上面这个gridview去绑定pubs数据库里面的titles表去隐藏的title列你就会发现我说的问题。。
我想请问下如果我直接从数据库取出数据来绑定 gridview 这种情况gridview的头名是不是就相当于数据库表的字段名这没错吧。。
你上面的列子是隐藏的固定的列而不是去隐藏的自动创建的列
using System;
using System.Data;
using System.Configuration;
using System.Collections;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Web.UI.HtmlControls;
using System.Data.SqlClient;using System.Collections.Generic;public partial class testGridView : System.Web.UI.Page
{
    List<int> lInt = new List<int>();
    List<string> lStr = new List<string>();    SqlConnection con = new SqlConnection("Data Source=.;Initial Catalog=pubs;User ID=sa;pwd=sa");    protected void Page_Load(object sender, EventArgs e)
    {
                if (!IsPostBack)
        {
            SqlDataAdapter da = new SqlDataAdapter("select * from titles", con);
            DataSet ds = new DataSet();
            da.Fill(ds, "titles");
            //设置要隐藏列的列名
            //lStr.Add("title");
            //lStr.Add("title_id");
            lStr.Add("price");
            //columnStr = "Name,title_id";
            //createColumn(gv);
            //gv.DataSource = getDataTable();
            gv.DataSource = ds.Tables["titles"].DefaultView;
            gv.DataBind();
        }
    }
    protected void gv_RowDataBound(object sender, GridViewRowEventArgs e)
    {

        if (e.Row.RowType == DataControlRowType.Header)
        {
            for (int i = 0; i < e.Row.Cells.Count; i++)
            {
                for (int j = 0; j < lStr.Count; j++)
                {
                    if (lStr[j] == e.Row.Cells[i].Text)
                    {
                        e.Row.Cells[i].Visible = false;
                        lInt.Add(i);
                    }
                }
                //// 不是字段名，是字段对应的列的列名
                //if (columnStr.Contains(e.Row.Cells[i].Text))// == "单位")
                //{
                //    e.Row.Cells[i].Visible = false;
                //    index += "," + i;
                //}
            }
        }
        else if (e.Row.RowType == DataControlRowType.DataRow)
        {
            for (int i = 0; i < e.Row.Cells.Count; i++)
            {
                for (int j = 0; j < lInt.Count; j++)
                {
                    if (lInt[j] == i)
                    {
                        e.Row.Cells[i].Visible = false;
                    }
                }                //if (index.Contains(i.ToString()))
                //{
                //    e.Row.Cells[i].Visible = false;
                //}
            }
        }    }
}
希望你能试试“用上面这个gridview（18楼的）去绑定pubs数据库里面的titles表然后去隐藏title列你就会发现我说的问题。。”
用 e.Row.Cells[i].Text == "title"
实际上你只要改变一下sql 语句就能实现想要的效果~
没必要这样烦琐的
我单独试了你的例子确实是可以隐藏的可我的页面上这样用却不行。。
e.Row.Cells[i].Text 从第4列开始就为空了。。我郁闷
不知道是不是跟用了 updatepanel有关系。或者是我哪里弄错了。。我再查一下。。
汉化也一样的可能你这次是select * from [tableName] 这样全查（ps: 不要写* 要写想查的列名，* 是不好的习惯，我偷个懒。）之后需要隐藏几列，那你只要把想显示的列查询出来就可以了select [columnName],[columnName],... from [tableName]
没发现2楼代码有什么问题，正确
<%@ Page Language="C#" AutoEventWireup="true" CodeFile="Default2.aspx.cs" Inherits="Default2" %><!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"><html xmlns="http://www.w3.org/1999/xhtml" >
<head runat="server">
    <title>无标题页</title>
</head>
<body>
    <form id="form1" runat="server">
    <div>
        <asp:GridView ID="GridView1" runat="server" OnDataBound="GridView1_DataBound" OnRowDataBound="GridView1_RowDataBound" AutoGenerateColumns="true">
        </asp:GridView>
        </div>
    </form>
</body>
</html>
    private int index = -1;
    protected void Page_Load(object sender, EventArgs e)
    {
        if (!Page.IsPostBack)
        {
            string strCn = System.Configuration.ConfigurationManager.ConnectionStrings["myConnection"].ConnectionString;
            string strSQL = @"SELECT * FROM [UserInfo]";
            SqlDataAdapter sda = new SqlDataAdapter(strSQL, strCn);
            DataTable dt = new DataTable();
            sda.Fill(dt);
            GridView1.DataSource = dt.DefaultView;
            GridView1.DataBind();
        }
    }    protected void GridView1_RowDataBound(object sender, GridViewRowEventArgs e)
    {
        //int index = -1;
        if (e.Row.RowType == DataControlRowType.Header)
        {
            index = -1;
            for (int i = 0; i < e.Row.Cells.Count; i++)
            {
                // 不是字段名，是字段对应的列的列名
                if (e.Row.Cells[i].Text == "Sex")
                {
                    e.Row.Cells[i].Visible = false;
                    index = i;
                }
            }
        }
        else if (e.Row.RowType == DataControlRowType.DataRow && index != -1)
        {
            e.Row.Cells[index].Visible = false;
        }
    }这样确实可以隐藏“Sex”列，已验证
这个帖子早就看过了，其实这类的问题大多如二楼在RowDataBound或者RowCreated事件中处理，但楼主开始对问题的描述不足够清楚，比如现在又提到的UpdatePanel..
protected void gv_RowDataBound(object sender, GridViewRowEventArgs e)
{
     if (e.Row.RowType == DataControlRowType.DataRow)
        {
     for (int i = 0; i < e.Row.Cells.Count; i++)
    {
       string s=((TextBox)DataBinder.Eval(e.DataItem,"这里写你要隐藏的字段名").ToString()).Text;
       if(e.row.cells[i].text==s)
      {
       e.Row.Cells[i].Visible = false;
      }
     }
   }
你按我上面的方法做,应该是可以的.如果不可以,那就是
((TextBox)DataBinder.Eval(e.DataItem,"这里写你要隐藏的字段名").ToString())这句的语法有错,因为我是凭记忆写上去的.

再发一贴：还是取gridview“列索引值” 为了把这个问题整明白 放100分

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再发一贴：还是取gridview“列索引值” 为了把这个问题整明白放100分