gridview 点击删除的话，后台cs文件怎么获取要删除的ID？

Question

gridview 点击删除的话，后台cs文件怎么获取要删除的ID？
简而言之，就是gridview 后台怎么获取前台选中的ID啊？

Answer 1

在你绑定的时候给主键：GridView1.DataKeyNames = new string[] { "主键" }取：GridView1.DataKeys[e.RowIndex].Value.ToString()

Answer 2

在 GridView1_RowDeleting中获取主键的值
protected void GridView1_RowDeleting(object sender, GridViewDeleteEventArgs e)
 {
    int index=GridView1.DataKeys[e.RowIndex].Value;
 }

Answer 3

foreach(GridViewRow gvr in GridView.rows)
{
//如果你的ID是绑定在label里的
Label lb=gvr.FindControl("Label1");
//Label1是放在GridView里的ID号lb.text里的值就是你要的
}

Answer 4

错误 2 无法将类型“object”隐式转换为“int”。存在一个显式转换(是否缺少强制转换?)

Answer 5

在 GridView1_RowCommand中获取主键的值：protected void GridView1_RowCommand(object sender, GridViewCommandEventArgs e)
{
int OrderId = Convert.ToInt32(GridView1.DataKeys[Convert.ToInt32(e.CommandArgument)].Value);}在 GridView1_PageIndexChanging中获取主键的值protected void GridView1_PageIndexChanging(object sender, GridViewPageEventArgs e)
{
int index=GridView1.DataKeys[e.NewPageIndex].Value;
}在 GridView1_RowDeleting中获取主键的值
protected void GridView1_RowDeleting(object sender, GridViewDeleteEventArgs e)
{
int index=GridView1.DataKeys[e.RowIndex].Value;
}在 GridView1_RowEditing中获取主键的值
protected void GridView1_RowEditing(object sender, GridViewEditEventArgs e)
{
int index = GridView1.DataKeys[e.NewEditIndex].Value;
}在 GridView1_RowUpdating中获取主键的值protected void GridView1_RowUpdating(object sender, GridViewUpdateEventArgs e)
{
int index = GridView1.DataKeys[e.RowIndex].Value;
}在 GridView1_RowDataBound中获取主键的值
protected void GridView1_RowDataBound(object sender, GridViewRowEventArgs e)
{
int index = GridView1.DataKeys[e.Row.RowIndex].Value;
}

Answer 6

datakeys获得的value是一个object。convert.toint32（datakeyvalue）

Answer 7

protected void GridView1_RowDeleting(object sender, GridViewDeleteEventArgs e) 
{ 
    int index=(int)GridView1.DataKeys[e.RowIndex].Value; 
} 

Answer 8

<ItemTemplate>
    <%#Eval("ID") %>
</ItemTemplate>
ID绑定在这...

Answer 9

GridView.DataKeys[e.RowIndex].Value; 

Answer 10

索引超出范围。必须为非负值并小于集合大小。
参数名: index
 int id =(int) this.grid.DataKeys[e.RowIndex].Value;
有错

Answer 11

你的GRID有没有设置DATAKEYS呢？ 把HTML代码贴上来

Answer 12

<asp:GridView>
<Columns>
<asp:TemplateField HeaderText=""> 
    <ItemTemplate>
    <asp:LinkButton runat="server" ID="del" CommandName="delete" CommandArgument='<%#Eval("ID") %>'>删除</asp:LinkButton>
    </ItemTemplate>
    </asp:TemplateField>
    </Columns>
    </asp:GridView>

Answer 13

<asp:GridView>
<Columns>
<asp:TemplateField HeaderText=""> 
    <ItemTemplate>
    <asp:LinkButton runat="server" ID="del" CommandName="delete" CommandArgument='<%#Eval("ID") %>'>删除</asp:LinkButton>
    </ItemTemplate>
    </asp:TemplateField>
    </Columns>
    </asp:GridView>
在<asp:GridView> 加个属性DataKeyNames="ID"int index=(int)GridView1.DataKeys[e.RowIndex].Value; 

Answer 14

===>code<asp:GridView DataKeysName="ID"><Columns><asp:TemplateFieldHeaderText=""><ItemTemplate><asp:LinkButtonrunat="server" ID="del" CommandName="delete" CommandArgument='<%#Eval("ID")%>'>删除</asp:LinkButton></ItemTemplate></asp:TemplateField></Columns></asp:GridView>

Answer 15

咦？没有runat=server也可以啊？

Answer 16

这样吧。去百度谷歌找一个gridview的使用范例……

Answer 17

protected void del_Click(object sender, EventArgs e)
{ 
    string id=((LinkButton)sender).CommandArgument.ToString();
}

Answer 18

http://blog.csdn.net/xianfajushi/archive/2008/11/30/3413317.aspx

Answer 19

你的 GridView的数据源是自动绑定还是手动绑定的?
如果这样的话你可以放个隐藏域,将值赋给隐藏域,然后循环来来取

Answer 20

gridview 编辑，删除，更新的用法
<%@ Page Language="C#" AutoEventWireup="true" CodeFile="GridViewUp.aspx.cs" Inherits="gridview_GridViewUp" %><asp:GridView ID="GridView1" runat="server"                             AutoGenerateColumns="False" AllowPaging="True" PageSize="12" OnRowCancelingEdit="GridView1_RowCancelingEdit"
                            OnRowEditing="GridView1_RowEditing" OnRowUpdating="GridView1_RowUpdating" OnRowDeleting="GridView1_RowDeleting"
                            [color=#800000]DataKeyNames="id,name" [/color] OnPageIndexChanging="GridView1_PageIndexChanging" DataMember="card,price" OnRowDataBound="GridView1_RowDataBound" GridLines="None">
                            <Columns>
                                <asp:BoundField HeaderText="身份证号" DataField="card" Visible=false />
                                <asp:BoundField HeaderText="编号" DataField="id" ReadOnly="True" />
                                <asp:BoundField DataField="name" HeaderText="姓名" ReadOnly="True" />
                                <asp:TemplateField HeaderText="身份证号">
                                    <ItemTemplate>
                                        <%# eval_r("card") %>
                                    </ItemTemplate>
                                    <EditItemTemplate>
                                        <asp:TextBox ID="TBCard" Text='<%# eval_r("card") %>' runat="server" Width="140px" />
                                    </EditItemTemplate>
                                    <ItemStyle Width="150px" />
                                </asp:TemplateField>
                                <asp:TemplateField HeaderText="学历">
                                    <ItemTemplate>
                                        <%# eval_r("description")%>
                                    </ItemTemplate>
                                    <EditItemTemplate>
                                        <asp:HiddenField ID="HDFXueli" runat="server" Value='<%# eval_r("xueli") %>' />
                                        <asp:DropDownList ID="DDLXueli" runat="server" Width="90px" />
                                    </EditItemTemplate>
                                    <ItemStyle Width="100px" />
                                </asp:TemplateField>
                                <asp:TemplateField HeaderText="价格">
                                    <ItemTemplate>
                                        <%# eval_r("price") %>
                                    </ItemTemplate>
                                    <EditItemTemplate>
                                        <asp:TextBox ID="TBPrice" Text='<%# eval_r("price") %>' runat="server" Width="90px" />
                                    </EditItemTemplate>
                                    <ItemStyle Width="100px" />
                                </asp:TemplateField>
                                <asp:BoundField HeaderText="建立时间" DataField="createdate" ReadOnly="True" />
                                <asp:CommandField ShowDeleteButton="True" ShowEditButton="True" HeaderText="操作" />
                            </Columns>
                            <PagerSettings FirstPageText="" LastPageText="" NextPageText="" PreviousPageText="" />
                            <RowStyle Height="20px" BackColor="#F7F6F3" ForeColor="#333333" />
                            <FooterStyle BackColor="#5D7B9D" Font-Bold="True" ForeColor="White" />
                            <EditRowStyle BackColor="#999999" />
                            <SelectedRowStyle BackColor="#E2DED6" Font-Bold="True" ForeColor="#333333" />
                            <PagerStyle BackColor="#284775" ForeColor="White" HorizontalAlign="Center" />
                            <HeaderStyle BackColor="#5D7B9D" Font-Bold="True" ForeColor="White" />
                            <AlternatingRowStyle BackColor="White" ForeColor="#284775" />
                        </asp:GridView>
                    
GridViewUp.aspx.cs文件代码：
 public partial class gridview_GridViewUp : System.Web.UI.Page
{
    protected void Page_Load(object sender, EventArgs e)
    {
        if (!IsPostBack)
        {
            GridViewBind();
        }
    }    protected void GridView1_PageIndexChanging(object sender, GridViewPageEventArgs e)
    {
        GridView1.PageIndex = e.NewPageIndex;
        GridViewBind();
    }    private void GridViewBind()
    {
        string connStr = ConfigurationManager.ConnectionStrings["ConnString"].ConnectionString;
        string SqlStr = "Select a.*,b.description FROM test01 a,xueli b where a.xueli=b.code and a.id<1000 and a.id>200";
        DataSet ds = new DataSet();        try
        {
            SqlConnection conn = new SqlConnection(connStr);
            if (conn.State.ToString() == "Closed") conn.Open();
            SqlDataAdapter da = new SqlDataAdapter(SqlStr, conn);
            da.Fill(ds, "test01");
            if (conn.State.ToString() == "Open") conn.Close();            GridView1.DataSource = ds.Tables[0].DefaultView;
            GridView1.DataBind();
        }
        catch (Exception ex)
        {
            Response.Write("数据库错误，错误原因：" + ex.Message);
            Response.End();
        }
    }    protected void GridView1_RowDataBound(object sender, GridViewRowEventArgs e)
    {
        if (((DropDownList)e.Row.FindControl("DDLXueli")) != null)
        {       
            DropDownList ddlxueli = (DropDownList)e.Row.FindControl("DDLXueli");            // 生成 DropDownList 的值，绑定数据
            string connStr = ConfigurationManager.ConnectionStrings["ConnString"].ConnectionString;
            string SqlStr = "Select * from xueli";
            DataSet ds = new DataSet();            SqlConnection conn = new SqlConnection(connStr);
            if (conn.State.ToString() == "Closed") conn.Open();
            SqlDataAdapter da = new SqlDataAdapter(SqlStr, conn);
            da.Fill(ds, "xueli");
            if (conn.State.ToString() == "Open") conn.Close();            ddlxueli.DataSource = ds.Tables[0].DefaultView;
            ddlxueli.DataTextField = "description";
            ddlxueli.DataValueField = "code";
            ddlxueli.DataBind();
            //            // 选中 DropDownList
            ddlxueli.SelectedValue = ((HiddenField)e.Row.FindControl("HDFXueli")).Value;
            //
        }
    }    protected void GridView1_RowEditing(object sender, GridViewEditEventArgs e)
    {
        GridView1.EditIndex = e.NewEditIndex;
        GridViewBind();
    }
    protected void GridView1_RowCancelingEdit(object sender, GridViewCancelEditEventArgs e)
    {
        GridView1.EditIndex = -1;
        GridViewBind();
    }    protected void GridView1_RowUpdating(object sender, GridViewUpdateEventArgs e)
    {
        string id = GridView1.DataKeys[e.RowIndex].Values[0].ToString();
        string card = ((TextBox)GridView1.Rows[e.RowIndex].FindControl("TBCard")).Text;
        string xueli = ((DropDownList)GridView1.Rows[e.RowIndex].FindControl("DDLXueli")).SelectedValue;
        string price = ((TextBox)GridView1.Rows[e.RowIndex].FindControl("TBPrice")).Text;        string connStr = ConfigurationManager.ConnectionStrings["ConnString"].ConnectionString;
        string SqlStr = "update test01 set card='" + card + "',xueli='" + xueli + "',price='" + price + "' where id=" + id;        try
        {
            SqlConnection conn = new SqlConnection(connStr);
            if (conn.State.ToString() == "Closed") conn.Open();
            SqlCommand comm = new SqlCommand(SqlStr, conn);
            comm.ExecuteNonQuery();
            comm.Dispose();
            if (conn.State.ToString() == "Open") conn.Close();            GridView1.EditIndex = -1;
            GridViewBind();
        }
        catch (Exception ex)
        {
            Response.Write("数据库错误，错误原因：" + ex.Message);
            Response.End();
        }
    }    protected void GridView1_RowDeleting(object sender, GridViewDeleteEventArgs e)
    {
        string id = GridView1.DataKeys[e.RowIndex].Values[0].ToString();
        string connStr = ConfigurationManager.ConnectionStrings["ConnString"].ConnectionString;
        string SqlStr = "delete from test01 where id=" + id;        try
        {
            SqlConnection conn = new SqlConnection(connStr);
            if (conn.State.ToString() == "Closed") conn.Open();
            SqlCommand comm = new SqlCommand(SqlStr, conn);
            comm.ExecuteNonQuery();
            comm.Dispose();
            if (conn.State.ToString() == "Open") conn.Close();            GridView1.EditIndex = -1;
            GridViewBind();
        }
        catch (Exception ex)
        {
            Response.Write("数据库错误，错误原因：" + ex.Message);
            Response.End();
        }
    }
}sql server2000生成表代码：
Create TABLE [dbo].[test01] (
    [id] [decimal](18, 0) IDENTITY (1, 1) NOT NULL ,
    [name] [varchar] (50) COLLATE Chinese_PRC_CI_AS NULL ,
    [card] [varchar] (50) COLLATE Chinese_PRC_CI_AS NULL ,
    [xueli] [varchar] (50) COLLATE Chinese_PRC_CI_AS NULL ,
    [price] [decimal](18, 0) NULL ,
    [createdate] [datetime] NULL
) ON [PRIMARY]
GOAlter TABLE [dbo].[test01] ADD
    CONSTRAINT [DF_test01_createdate] DEFAULT (getdate()) FOR [createdate],
    CONSTRAINT [PK_test01] PRIMARY KEY CLUSTERED
    (
        [id]
    ) ON [PRIMARY]
GO
Create TABLE [dbo].[xueli](
    [id] [int] IDENTITY(1,1) NOT NULL,
    [code] [int] NULL,
    [description] [nvarchar](50) COLLATE Chinese_PRC_CI_AS NULL,
CONSTRAINT [PK_xueli] PRIMARY KEY CLUSTERED
(
    [id] ASC
)WITH (IGNORE_DUP_KEY = OFF) ON [PRIMARY]
) ON [PRIMARY]

Answer 21

现在gridview属性上设置DataKeys 例如id,name
//删除操作
    protected void LinkButton10_Click(object sender, EventArgs e)
    {            Control col = sender as Control;
            int index = ((GridViewRow)col.Parent.Parent).RowIndex;
            int id = int.Parse(GridView1.DataKeys[index].Values[0].ToString());            
            string strsqq = "delete from gh_sys  where gh_id=" + id;    }

Answer 22

if(commandName="delete")
    string id = e.CommandArgument.ToString();
ExectSql(id);

Answer 23

.aspx页面：
在gridview 中放入  <asp:LinkButton ID="LinkButton1" runat="server" CommandName="tuihui" CommandArgument='<%# Eval("ID") %>'>退回
cs文件:
 protected void Gridview1_ItemCommand(object source, DataListCommandEventArgs e)
    {
        switch (e.CommandName)
        {
            case "tuihui":
                Response.Write(e.CommandArgument);
                break;        }
    }

Answer 24

前台代码
   <asp:TemplateField HeaderText="操作">
                                <ItemTemplate>
                                    <asp:LinkButton ID="btnDelete" runat="server" CausesValidation="false" CommandName="delete"
                                        OnClientClick="return confirm('您确定要删除吗？')" Text="删除"></asp:LinkButton>
                                </ItemTemplate>
                            </asp:TemplateField>
后台
    protected void gvMessageBoard_RowDeleting(object sender, GridViewDeleteEventArgs e)
    {
        int Id = Convert.ToInt32(this.gvMessageBoard.DataKeys[e.RowIndex].Value.ToString());        if (manager.MessageBoardDelete(Id))
        {
            BindGrid();
            this.Page.ClientScript.RegisterStartupScript(this.GetType(), "", "<script>alert('删除成功')</script>");        }
        else
        {
            this.Page.ClientScript.RegisterStartupScript(this.GetType(), "", "<script>alert('删除失败')</script>");
        }
    }
记得在gridview 属性里面加上这个 DataKeyNames="MId"

Answer 25

//绑定ID  
      <asp:TemplateField HeaderText="ID" Visible="False">
                                                    <ItemTemplate>
                                                        <asp:Label ID="lblID" runat="server" Text='<%# Eval("ID") %>'></asp:Label>
                                                    </ItemTemplate>//获取ID
        int ID = int.Parse((GridView1.Rows[e.RowIndex].FindControl("lblID") as Label).Text);

Answer 26

这个帖子跟你的内容一样 
 有答案
http://topic.csdn.net/u/20100115/15/d4c41926-9e50-4fe7-8030-96d0d59b01b9.html

Answer 27

在 GridView1_RowCommand中获取主键的值：protected void GridView1_RowCommand(object sender, GridViewCommandEventArgs e)
{
int OrderId = Convert.ToInt32(GridView1.DataKeys[Convert.ToInt32(e.CommandArgument)].Value);}在 GridView1_PageIndexChanging中获取主键的值protected void GridView1_PageIndexChanging(object sender, GridViewPageEventArgs e)
{
int index=GridView1.DataKeys[e.NewPageIndex].Value;
}在 GridView1_RowDeleting中获取主键的值
protected void GridView1_RowDeleting(object sender, GridViewDeleteEventArgs e)
{
int index=GridView1.DataKeys[e.RowIndex].Value;
}在 GridView1_RowEditing中获取主键的值
protected void GridView1_RowEditing(object sender, GridViewEditEventArgs e)
{
int index = GridView1.DataKeys[e.NewEditIndex].Value;
}在 GridView1_RowUpdating中获取主键的值protected void GridView1_RowUpdating(object sender, GridViewUpdateEventArgs e)
{
int index = GridView1.DataKeys[e.RowIndex].Value;
}在 GridView1_RowDataBound中获取主键的值
protected void GridView1_RowDataBound(object sender, GridViewRowEventArgs e)
{
int index = GridView1.DataKeys[e.Row.RowIndex].Value;
}

Answer 28

前台                                   <asp:TemplateField HeaderText="操作" ItemStyle-HorizontalAlign="Center">
                                            <ItemTemplate>
                                                <asp:LinkButton runat="server" ID="lb_deleteInfo" CommandArgument='<%#Eval("ArticleId") %>'
                                                    CommandName="deleteinfo" Text="删除" OnClientClick="javascript:return confirm('确定删除信息吗?');" />
                                            </ItemTemplate>
                                        </asp:TemplateField>后台        protected void GV_article_RowCommand(object sender, GridViewCommandEventArgs e)
        {
            if (e.CommandName == "deleteinfo")
            {
                int nId = int.Parse(e.CommandArgument.ToString());
                BLL.Article.Delete(nId);
            }
            BindData(condition);
        }

Answer 29

   protected void gvFList_RowCommand(object sender, GridViewCommandEventArgs e)
{   
    int id = Convert.ToInt32(e.CommandArgument) 
    string name = e.CommandName
if(name==delete)
{
  //删除方法
  //绑定方法
}}