从Gridview删除记录！ [英] Delete Record From Gridview!!

问题描述

我写了下面的代码从gridview中删除一条记录，但是在选择网格值的参数中出现错误对象引用未设置为对象的实例".请指教

i wrote the below code to delete a record from a gridview but i am getting error ''Object reference not set to an instance of an object.'' in the parameter for selecting grid value. please advice

Protected Sub GridView1_RowDeleting(ByVal sender As Object, ByVal e As System.Web.UI.WebControls.GridViewDeleteEventArgs) Handles GridView1.RowDeleting


       Dim Parram(6) As Object


       Parram(0) = TxtTrx.Text.Trim
       Parram(1) = GridView1.SelectedRow.Cells(1).Text
       Parram(2) = GridView1.SelectedRow.Cells(2).Text
       Parram(3) = GridView1.SelectedRow.Cells(3).Text
       Parram(4) = GridView1.SelectedRow.Cells(3).Text
       Parram(5) = GridView1.SelectedRow.Cells(4).Text




       Dim Count As Integer = DataBase.ExecuteNonQuery("sp_DeletePTY_Rmt_D", Parram, "Aloha2GP")
       If Count > 0 Then
           LblError.Text = "(" & Count & ")" & "Record Deleted"
       Else

           LblError.Text = "(" & Count & ")" & " Record Deleted"
       End If

end sub

推荐答案

对象引用未设置为对象的实例

当您尝试使用属性或调用对象的方法为null时，会发生此错误.更多详细信息:此处 [

Object reference not set to an instance of an object

This error happens when you try to use a property or call a method of an object that is null. More details: here[^]

A simple use of Visual studio DEBUGGER can tell you the object because of which it is happening. Just look at the stack trace and put a debugger on that line (Here: parameter for selecting grid value). Check the objects of that line and see if any one is null and you are trying to use that objects property. Handle the same.

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