网格视图选定的行单元格值变为空

Question

I have a grid in my asp.net page . Inside the selected index change event I implemented the below code .

 int ID = Convert.ToInt32(grdMnaualEntryTransactionTemplate.Rows[selectedIndex +1].Cells[1].Text); 

Cell1 is a number, in the Running time it gives me an error "Input string was not in a correct format" .It occurs due to "Text" is getting null in the running time. I implemted below code too in the Selected index changed event it always gets a value.

 int selectedIndex = grdMnaualEntryTransactionTemplate.SelectedIndex;

Answer 1

Why are you using selectedIndex + 1 ? This will give you the row below the selected row, and will throw an exception when the user selects the last row in the grid.

Try int ID = Convert.ToInt32(grdMnaualEntryTransactionTemplate.Rows[selectedIndex].Cells[1].Text); instead.

Answer 2

您可以这样使用..这是在gridview中获取选定行的数据的简单方法。请尝试以下代码。

int ID = Convert.ToInt32(grdMnaualEntryTransactionTemplate.SelectedRow.Cells[1].Text);

Answer 3

如果要选择值，则可以通过DataKeyName设置并调用SelectedIndexChanged事件。

string data = grdMnaualEntryTransactionTemplate.SelectedValue.ToString();

Answer 4

If you have the action buttons on the Grid, ie. Select, Edit etc, then these will be in the Rows.Cells[] array. Therefore if you have the three "Select" "Edit" "Delete" buttons per row, your first actual data cell will be array index[3].

As others have pointed out index+1 is incorrect as well.