[ASK ]-CheckBox DataGridView

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Hi, I'm working with DataGridView. My questions are;
1. How to check if the rows are checked. For example, I have 5 rows, 2nd row and 4th row are checked. What I need is showing 2 and 4 (the index of each checked rows).
2. Above, there are 2 checked rows. How to count them?

The data is retrieved from sql server database through dataTable and DataAdapter and the checkBox column is added manually in Column Collection Properties.
Here's my code and it's not working properly

C#

private void setTidakAktifToolStripMenuItem_Click(object sender, EventArgs e)
{
    for (int i = 0; i < this.gridUser.Rows.Count -1; i++)
    {
        int c = 0;
        //if (Convert.ToBoolean(this.gridUser.Rows[i].Cells["ColCheckBox"].Value) == true) //not working
        DataGridViewCheckBoxCell chk = (DataGridViewCheckBoxCell)this.gridUser.Rows[i].Cells["ColCheckBox"];
        if (Convert.ToBoolean(chk.Value) == true)
            c++;
    }
    //also not working
    //foreach (DataGridViewRow row in this.gridUser.Rows)
    //{
    //    if (Convert.ToBoolean(((DataGridViewCheckBoxCell)row.Cells["ColCheckBox"]).Value) == true)
    //        c++;
    //}
    //MessageBox.Show(c.ToString());
}

Posted 17-Apr-12 21:39pm

derodevil

Updated 17-Apr-12 21:40pm

v2

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Tanveer A · Answer 1 · 2012-04-17T21:44:00

Solution 1

dim chk as new checkbox

while a<datagrid.rows.count>
chk=ctype(datagrid.rows(a).cell(1).controls[1],CheckBox)
if chk.checked then
your operation
end if

Posted 17-Apr-12 21:44pm

Tanveer A

Comments

derodevil 18-Apr-12 4:00am

Where do you get .Controls[1] property? It's coded in C#. Of course it throws exception if I write
CheckBox chk = new CheckBox(); int c = 0;
while (c != this.gridUser.Rows.Count)
{
chk = (CheckBox)this.gridUser.Rows[c].Cells[1].Controls[1];
if (chk.Checked)
c++;
}