DataKeyNames='FID' //前台绑定一个值
GridView1.DataKeys[e.Row.RowIndex].Value.ToString;
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DataKeyNames='FID,FName' //前台绑定两个值
GridView1.DataKeyNames = new String[] { "Id","WkNumber" }; //后台绑定两个字段值
//取关键字段值
GridView1.DataKeys[e.Row.RowIndex].Values[0].ToString;
GridView1.DataKeys[e.Row.RowIndex].Values[1].ToString;
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gridview取得某行的datakey：GridView中每行最后一列设有按钮，我需要在点击按钮后，得到该行的Datakey得值，然后触发其他操作。
答:首先绑定DataKeyNames GridView.DataKeyNames=new String[]{"字段名称"};
取值string aaa=GridView.DataKeys[e.Row.RowIndex].Value.ToString();
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index=((GridViewRow)(((Button)sender).Parent.Parent)).RowIndex;
//就是一层一层往上找。通过现在的button找到他所在的cell,然后再调用parent，就找他所在的行，然后取rowindex，这个方法很常用的。
在GV中按选择链接(CommandName="Select")后获取ID索引值：
protected void Gv_SelectedIndexChanged(object sender, EventArgs e)
{
int id = Int32.Parse(GvLv.DataKeys[GvLv.SelectedIndex].Value.ToString());
int id = Int32.Parse(Gv.DataKeys[Gv.SelectedIndex].Values[0].ToString());//多个关键字段时使用
Response.Redirect("MdfLvApro.aspx?id=" + id);
} int id = Int32.Parse(GridView1.SelectedDataKey.Value.ToString());
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protected void CKAprd_CheckedChanged(object sender, EventArgs e)//在GV中有一checkbox/Button，点击后获取索引值
{
GridViewRow GvRow=(sender as CheckBox).NamingContainer as GridViewRow;//將事件源轉化為行
GridViewRow GvRow = (sender as Button).NamingContainer as GridViewRow;//將事件源轉化為行
int index=GvRow.RowIndex;//index就是点击行的索引
CheckBox cbox = (CheckBox)GridView1.Rows[index].FindControl("CKAprd");//找到所在行的控件
string LvUs = ((Label)GridView1.Rows[index].FindControl("Label1")).Text;
}
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protected void GvDpt_RowDeleting(object sender, GridViewDeleteEventArgs e)
{
int id = Convert.ToInt32(GvDpt.DataKeys[e.RowIndex].Value.ToString());
DtSc.ExcuteQuery("delete from Departments where id=" + id + "");
}
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protected void GvDpt_RowUpdating(object sender, GridViewUpdateEventArgs e)
{
int id = Convert.ToInt32(GvEpyLst.DataKeys[e.RowIndex].Values[0].ToString());
string WkNumber = GvEpyLst.DataKeys[e.RowIndex].Value.ToString();
int id = int.Parse(GvDpt.DataKeys[e.RowIndex]["Id"].ToString());//Id,WkNumber关键字段有显示时获取其值
string WkNumber = GvEpyLst.DataKeys[e.RowIndex]["WkNumber"].ToString();
}
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protected void GvEpyLst_RowDataBound(object sender, GridViewRowEventArgs e)//在DataBound中获取关键字段值
{ string WkNb = GvEpyLst.DataKeys[e.Row.RowIndex].Values["WkNumber"].ToString(); }
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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; }
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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; }
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在GridView中有一“详细信息”按,点击后在RowCommand中获取主健值
protected void GridView1_RowCommand(object sender, GridViewCommandEventArgs e)
{ if (e.CommandName == "xs ")
{ string v = e.CommandArgument;
int id = Int32.Parse(GridView1.DataKeys[Convert.ToInt32(v)].Value.ToString());
int OrderId = Convert.ToInt32(GridView1.DataKeys[Convert.ToInt32(e.CommandArgument)].Value);
Response.Redirect("delfault.aspx?key= " + id); } }
在RowCommand事件里是没有e.RowIndex这个定义的。你要是想得到某一行的索引。
首先，在你数据进行绑定的时候用RowDataBound这个事件，在这个事件里LinkButton linkbutton = (LinkButton)e.Row.Cells[0].FindControl("lbProjectName");
linkbutton.CommandArgument = e.Row.RowIndex.ToString();其中linkbutton.CommandArgument就是给你要执行的命令行设置一个行索引,这样你在你RowCommand事件里直接用e.CommandArgument就可以得到某一行的索引，然后通过这个索引就可以获取主键的值
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<asp:LinkButton id="linkbtn" runat="server" CommandName="L" CommandArgument=' <%# Eval("主键ID") %>'>
protected void GridView1_RowCommand(Object sender, GridViewCommandEventArgs e)
{ if(e.CommandName=="L") { int ID= Convert.ToInt32(e.CommandArgument); response.write(ID); } }
string str = ((TextBox)this.GridView1.Rows[ID].FindControl("TextBox1")).Text.Trim();
protected void LinkButton1_Click(object sender, EventArgs e)
{ string id=((LinkButton)sender).CommandArgument.ToString() ; }
或 LinkButton btn = sender as LinkButton; GridViewRow row = btn.NamingContainer as GridViewRow; GridView grd = row.NamingContainer as GridView; int id = (int)grd.DataKeys[row.RowIndex].Value;
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string strUsCls = (string)Session["UsCls"];
int? UsCls = string.IsNullOrEmpty(strUsCls) ? 0 : Convert.ToInt32(strUsCls);//
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protected void CheckBox3_CheckedChanged(object sender, EventArgs e)
{ if (((CheckBox)sender).Checked)
{ for (int i = 0; i < GridView1.Rows.Count; i++)
{ ((CheckBox)GridView1.Rows[i].Cells[6].FindControl("CheckBox4")).Checked = true; }
}
else
{ fill(); }
}