datagrid current column

Question

how to get datagrid view current column value on move the cursor one column to another column

Sunny Sharma · Answer

Hi Vadivel Definitely it will give you an error if you use it like this. The moment a DataGridView starts initializing it fires a CellValue_Changes event every time it initializes a new cell or change the value of any cell whether it is a header cell or it's a row cell. Well that's not a problem in your code. The problem is you're trying to access  DGV.CurrentRow.Cells[0].Value  which is null. Ther's no CurrentRow the moment a DataGridView Gets Initialized. Hope you got the reason why the error is there. If you want to track if the cell value is changed you can try CellEndEdit event: private void DGV_CellEndEdit(object sender DataGridViewCellEventArgs e) { if (e.ColumnIndex == 0) { if ((string)DGV.CurrentRow.Cells[0].Value.ToString() != string.Empty) MessageBox.Show(ok); } } Hope it helps :)

vadivel · Answer

private void dataGridView1_CellValueChanged(object sender DataGridViewCellEventArgs e) { if (e.ColumnIndex == 0) { if ((string)dataGridView1.CurrentRow.Cells[0].Value.ToString() != string.Empty) MessageBox.Show(ok); } } Error : NullReferenceException was unhandled Object reference not set to an instance of an object. How to solved this error

Sunny Sharma · Answer

Hi vadivel You can use CellClick event of DataGridView to capture the current column and row Index. Below is a demonstration: private void DGV_ CellClick (object sender DataGridViewCellEventArgs e) { MessageBox.Show(Mouse Entered- Col: + e.ColumnIndex .ToString() +  Row: + e.RowIndex .ToString()); } This code will popup a message each time a cell is clicked/selected to edit with Column & Row Index. Happy Coding :) Please don't forget to accept this as answer if it helps! Thanks.