CheckAll checkboxes

[bahed121]

hello

I have added a checkbox column in my C1TrueDBGrid i want to check all of the checkboxes with single click i have been looking for a solution i found one for DataGridView which is to add a check box in the header of column and check all of the checkbox cells in the checked changed event of the checkbox header... but when i add this code for C1TrueDBGrid it doesn't work it gives a lot of errors one of which is we cannot use C1TrueDBGrid cell as checkbox or Boolean value cannot be compared as string can any one help?

Thanks in advance

[Saikalyankumar]

Can, you give the Coding which you have used to insert the Checkbox column in C1TrueDBGrid?

[abelLazm]

If you have added checkbox column as i have suggested you in your previous thread then by adding this code in checkbox_checkedchanged event you will get your desired results hope it will be helpful :)

private void checkBox1_CheckedChanged(object sender, EventArgs e)
        {
            try
            {
                c1TrueDBGrid1.MoveFirst();
                for (int j = 0; j < c1TrueDBGrid1.RowCount; j++)
                {
                    if (checkBox1.CheckState.ToString() == "Checked")
                        c1TrueDBGrid1.Columns[0].Value = true;
                    else 
                      c1TrueDBGrid1.Columns[0].Value = false;

                    c1TrueDBGrid1.MoveNext();
                }
            }
            catch (Exception ee)
            {
                MessageBox.Show(ee.ToString(), "Error", MessageBoxButtons.OK, MessageBoxIcon.Error);
            }

        }

[bahed121]

I am using this code

private void checkBox1_CheckedChanged(object sender, EventArgs e) {
    for (int i = 0; i < c1TrueDBGrid1.RowCount; i++) {
	c1TrueDBGrid1[0, i].Value = ((CheckBox) c1TrueDBGrid1.Controls.Find("checkBox1", true)[0]).Checked;
    }
    c1TrueDBGrid1.EndEdit();
}

[Saikalyankumar]

abelLazm, you have forgotten to put the 'j' value in the array size inside the For loop and instead you have put '0' itself.

private void checkBox1_CheckedChanged(object sender, EventArgs e)
        {
            try
            {
                c1TrueDBGrid1.MoveFirst();
                for (int j = 0; j < c1TrueDBGrid1.RowCount; j++)
                {
                    if (checkBox1.CheckState.ToString() == "Checked")
                        c1TrueDBGrid1.Columns[j].Value = true;
                    else 
                      c1TrueDBGrid1.Columns[j].Value = false;

                    c1TrueDBGrid1.MoveNext();
                }
            }
            catch (Exception ee)
            {
                MessageBox.Show(ee.ToString(), "Error", MessageBoxButtons.OK, MessageBoxIcon.Error);
            }

        }

[bahed121]

Your code worked abellazm thanks :)

[abelLazm]

Saikalyankumar i didn't forgot you got it wrong it is

c1TrueDBGrid1.Columns[0].Value = true;

because checkbox is supposed to be the 0th column of c1TrueDBGrid1 so we have to change only its value and not other column's vale hope you understand :)

and bahed121 the code you were using is right for datagridview but not C1TrueDBGrid because the way we access rows and columns is different in both controls