如何通过gridview外的复选框获取id选择行 [英] How to get the id selected row through checkbox outside gridview

问题描述

您好，

我在gridview的每一行都有一个gridview和复选框。我想获取所选复选框row.so的ID，我正在尝试以下代码

Hello,
I have an gridview and checkbox on every row of an gridview.I want to get the id of selected checkbox row.so, i am trying following code

foreach (GridViewRow gvr in grdReports.Rows)
       {
           CheckBox chkSelectEmp = (CheckBox)grdReports.FindControl("chkSelect");
           Label lblEmpId = (Label)grdReports.FindControl("lblEmpRefId");
           if (chkSelectEmp.Checked == true)
               Session["EmpRefId"] = lblEmpId.Text.ToString();
       }

但是收到以下错误

对象引用未设置为对象的实例。

on

if（chkSelectEmp.Checked == true）

but getting following error
Object reference not set to an instance of an object.
on
if (chkSelectEmp.Checked == true)

推荐答案

试试这个

try this

foreach (GridViewRow row in grdReports.Rows)
{ 
CheckBox chkSelectEmp = row.FindControl("chkSelect") as CheckBox;
if (chkSelectEmp .Checked == true)
{
Label lblEmpId = (Label )grdReports.Rows[rowIndex].Cells[6].FindControl("lblEmpRefId");
Session["EmpRefId"] = lblEmpId.Text.ToString(); 
}
}

这里，你提到单元格[6]来纠正LblEmpRefId的索引

here , you metion Cells[6] to Correct Index of "LblEmpRefId"

当使用findcontrol作为标签和复选框时，将代码grdReports替换为行。



试试这个

replace code grdReports to row when use findcontrol for label and checkbox .

try this

foreach (GridViewRow row in grdReports.Rows)
            {

                CheckBox chkSelectEmp = row.FindControl("chkSelect") as CheckBox;
                
                if (CheckBox1.Checked == true)
                {
                   Label lblEmpId = row.FindControl("lblEmpRefId") as Label;
                   Session["EmpRefId"] = lblEmpId.Text.ToString();

                }
            }

更改

change

grdReports.FindControl

to

to

gvr.FindControl

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