指数超出范围。 [英] Index was out of range.

问题描述

嘿所有



当我尝试选择命令时，我的代码中出现以下错误



错误



指数超出范围。必须是非负数且小于集合的大小。参数名称：index



CODE

hey all

when i try to select command the following error comes in my code

ERROR

Index was out of range. Must be non-negative and less than the size of the collection. Parameter name: index

CODE

protected void GridView1_RowCommand(object sender, GridViewCommandEventArgs e)
        {
            if (e.CommandName == "Delete")
            {
                DepartmentSupervisorInfo.DeleteDeptSupervisor(Convert.ToInt32(GridView1.Rows[Convert.ToInt32(e.CommandArgument)].Cells[2].Text));
                GridView1.DataSource = DepartmentSupervisorInfo.getDeptSupervisor();
                GridView1.DataBind();
            }
            else if (e.CommandName == "Select")
            {
                DataSet ds = DepartmentSupervisorInfo.getDeptSupervisorbyID(Convert.ToInt32(GridView1.Rows[Convert.ToInt32(e.CommandArgument)].Cells[2].Text));
                Hdnfld_deptsupid.Value = ds.Tables[0].Rows[0]["DepartmentSupervisorID"].ToString();
                Dd_supDepid.DataValueField = ds.Tables[0].Rows[0]["DepartmentID"].ToString();
                dd_supEmpid.DataValueField = ds.Tables[0].Rows[0]["EmployeeID"].ToString();
           }
        }

此行中的错误

ERROR IN THIS LINE

DataSet ds = DepartmentSupervisorInfo.getDeptSupervisorbyID(Convert.ToInt32(GridView1.Rows[Convert.ToInt32(e.CommandArgument)].Cells[2].Text));

推荐答案

问题出在这一行

Problem is at this line

GridView1.Rows[Convert.ToInt32(e.CommandArgument)].Cells[2].Text

检查GridView1.Rows是否包含那么多行。它似乎没有。例如，Convert.ToInt32（e.CommandArgument）返回2，但GridView1不包含两行。



检查Convert.ToInt32的值（e.CommandArgument）并修复它

Check that GridView1.Rows contains that many rows. It seems that it does not. For example Convert.ToInt32(e.CommandArgument) is returning 2 but the GridView1 does not contain two rows.

Check the value of Convert.ToInt32(e.CommandArgument) and fix it

MessageBox.Show(e.CommandArgument);

//row number is:e.CommandArgument+1
//cell number is：3
MessageBox.Show(GridView1.Rows[Convert.ToInt32(e.CommandArgument)].Cells[2].Text);

调试前面的代码并将结果粘贴给我。

debug the previous code and paste the result to me .

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