Set DataGridViewCheckBoxCell Value to True

Question

HI,

Im working with a DGV which is bound to a sql datasource. It has an unbound column which is DataGridViewCheckBoxColumn, I want to set all the checkbox to checked when the DGV is initialized.

Here is my code

 foreach (DataGridViewRow row in dataGridView1.Rows)

        {

          DataGridViewCheckBoxCell temp_Check_Cell = (DataGridViewCheckBoxCell)row.Cells["C_ChkMtr"];

          temp_Check_Cell.Value = true;

          

        }

However, it doesn't work.

I've gone through the entire debug process, the value of the cell remains true until   the showdialog() is called. I also found out that if I add the code above to a

button, then press the button, all the check boxes will be checked, which means the code works after showdialog() not before.

 

Does anyone know what's wrong?

 

Thank you

 

Answer 1

WHere does the above foreach loop reside? Ctor? Form_load? Could you post that method/event

 

Answer 2

Too bad you didn't post code that demonstrates what you are talking about.  " ShowDialog() "  It is difficult to follow what you are talking about.

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Answer 3

hi my friend.

you can set checkbox value to true whenever your datagrid  DataBindingComplete event raised ,

 

  private void dataGridView1_DataBindingComplete(object sender, DataGridViewBindingCompleteEventArgs e)
    {
      foreach (DataGridViewRow row in dataGridView1.Rows)
      {
        DataGridViewCheckBoxCell temp_Check_Cell = (DataGridViewCheckBoxCell)row.Cells["C_ChkMtr"];
        temp_Check_Cell.Value = true;
      }

    }

 

 

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Answer 4

Thank you Vali.

 

Your solutions works fine.

Answer 5

thanks my dear friend.

i am very glad that i could to help my friend.

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