girdview问题

Question

我想在绑定的gridview里添加dropdownlist控件来对应绑定的每一行每一列要取的值！~求代码.....以及显示的结果。

Answer 1

  protected void gdvProInfo_RowDataBound(object sender, GridViewRowEventArgs e)
    {
        //在编辑状态绑定‘是’，‘否’到下拉列表
        if (e.Row.RowState == (DataControlRowState.Alternate | DataControlRowState.Edit))        {
            DropDownList ddl = e.Row.FindControl("ddlIFFORBID") as DropDownList;
            HiddenField hdIfFor = e.Row.FindControl("hdIfFor") as HiddenField;
            ListItem li = ddl.Items.FindByText(hdIfFor.Value);
            if (li != null)
            {
                ddl.SelectedItem.Selected = false;
                li.Selected = true;
            }
        }
        if (e.Row.RowState == DataControlRowState.Edit)        {
            DropDownList ddl = e.Row.FindControl("ddlIFFORBID") as DropDownList;
            HiddenField hdIfFor = e.Row.FindControl("hdIfFor") as HiddenField;
            ListItem li = ddl.Items.FindByText(hdIfFor.Value);
            if (li != null)
            {
                ddl.SelectedItem.Selected = false;
                li.Selected = true;
            }
        }
}  加红的部分是关键代码，代码写在事件RowDataBound里。

Answer 2

我绑定数据后后台没有显示出gdvProInfo_RowDataBound  是什么原因...

Answer 3

嗯，应该在rowdatabound事件编dropdownlist的绑定代码

Answer 4

后台代码：
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;
public partial class Default4 : System.Web.UI.Page
{
    SqlConnection sqlcon;
    string strCon = "Data Source=(local);Database=北风贸易;Uid=sa;Pwd=sa";
    protected void Page_Load(object sender, EventArgs e)
    {
        DropDownList ddl;
        if (!IsPostBack)
        {
            string sqlstr = "select top 5 * from 飞狐工作室";
            sqlcon = new SqlConnection(strCon);
            SqlDataAdapter myda = new SqlDataAdapter(sqlstr, sqlcon);
            DataSet myds = new DataSet();
            sqlcon.Open();
            myda.Fill(myds, "飞狐工作室");
            GridView1.DataSource = myds;
            GridView1.DataBind();
            for (int i = 0; i <= GridView1.Rows.Count - 1; i++)
            {
                DataRowView mydrv = myds.Tables["飞狐工作室"].DefaultView[i];
                if (Convert.ToString(mydrv["员工性别"]).Trim() == "True")
                {
                    ddl = (DropDownList)GridView1.Rows[i].FindControl("DropDownList1");
                    ddl.SelectedIndex = 0;
                }
                if (Convert.ToString(mydrv["员工性别"]).Trim() == "False")
                {
                    ddl = (DropDownList)GridView1.Rows[i].FindControl("DropDownList1");
                    ddl.SelectedIndex = 1;
                }
            }
            sqlcon.Close();
        }
    }
    public SqlDataReader ddlbind()
    {
        string sqlstr = "select distinct 员工性别 from 飞狐工作室";
        sqlcon = new SqlConnection(strCon);
        SqlCommand sqlcom = new SqlCommand(sqlstr, sqlcon);
        sqlcon.Open();
        return sqlcom.ExecuteReader();
    }
前台主要代码：
<asp:GridView ID="GridView1" runat="server" AllowSorting="True" AutoGenerateColumns="False"
                        CellPadding="3" Font-Size="9pt"  BackColor="White" BorderColor="#CCCCCC" BorderStyle="None" BorderWidth="1px">
                        <FooterStyle BackColor="White" ForeColor="#000066" />
                        <Columns>
                             <asp:BoundField DataField="身份证号码" HeaderText="用户ID" SortExpression="身份证号码" />
                            <asp:BoundField DataField="姓名" HeaderText="用户姓名" SortExpression="姓名"/>
                            <asp:TemplateField HeaderText="员工性别">
                                <ItemTemplate>
                                    <asp:DropDownList ID="DropDownList1" runat="server" DataSource='<%# ddlbind()%>' DataValueField="员工性别" DataTextField="员工性别">
                                    </asp:DropDownList>
                                </ItemTemplate>
                            </asp:TemplateField>
                            <asp:BoundField DataField="家庭住址" HeaderText="家庭住址" SortExpression="家庭住址"/>
                                
                        </Columns>
                        <RowStyle ForeColor="#000066" />
                        <SelectedRowStyle BackColor="#669999" Font-Bold="True" ForeColor="White" />
                        <PagerStyle BackColor="White" ForeColor="#000066" HorizontalAlign="Left" />
                        <HeaderStyle BackColor="#006699" Font-Bold="True" ForeColor="White" />
                    </asp:GridView>

Answer 5

建一个数据源，然后绑定到下拉菜单上。
如果页面用了数据源控件：DropDownList1.DataSourceID=***;
如要绑定生成的DATASET或者DATATABLE：DropDownList1.DataSource=***;
取值嘛：
foreach (GridViewRow row in GridView1.Rows)  
  {
  DropDownList DropDownList1 = row.FindControl("DropDownList1") as DropDownList;
  DropDownList1.SelectedValue;//取的值
  }

Answer 6

rowdatabound这个事件是不是要加什么头文件进去？
主动加进去会报错...

Answer 7

  不会加控件的事件吗？
   最简便的方法，你打开vs 到页面设计模式窗口。然后单击你的GridView 在右边的属性框里，是不是有个“雷电”的符号，然后你点一下这个符号，里面就是当前GridView 的所有事件，找到rowdatabound 这行，然后双击，你会进入.cs页面，直接在这个事件里编写那段代码

Answer 8

 protected void DDLAnnex_SelectedIndexChanged(object sender, EventArgs e)
    {
        DropDownList drp = sender as DropDownList; // 触发事件的 DropDownList
        GridViewRow row = drp.NamingContainer as GridViewRow; // GridView 当前行        
        row.Style.Add(HtmlTextWriterStyle.BackgroundColor, drp.SelectedValue);
        int CurRow = row.RowIndex;
    }

Answer 9

楼主没用过gdvProInfo_RowDataBound 事件？