Check a checkbox inside Gridview

I want to check 开发者_如何学Pythona check-box which is inside Gridview programmatic on click of a button

If you know the location of the cell then you can set it as

datagridview1[0,2].Value = true;// this should be a checkboxcolumn

OR

datagridview1["chkboxcolumnName",2].Value = true;

This will cause the checkbox to be checked for that particular cell.

Hope this is what you meant else please edit the question for more details.

Try it this way (by subscribing to two events):

    void dataGridView1_CurrentCellDirtyStateChanged(object sender, EventArgs e)
    {
        if (dataGridView1.IsCurrentCellDirty)
            dataGridView1.CommitEdit(DataGridViewDataErrorContexts.Commit);
    }

    private void dataGridView1_CellValueChanged(object obj, DataGridViewCellEventArgs e)
    {
        if (e.ColumnIndex == 1) //compare to checkBox column index
        {
            DataGridViewCheckBoxCell cbx = (DataGridViewCheckBoxCell)dataGridView1[e.ColumnIndex, e.RowIndex];
            if (!DBNull.Value.Equals(cbx.Value) && (bool)cbx.Value == true)
            {                 
                //checkBox is checked - do the code in here!
            }
            else
            {
               //if checkBox is NOT checked (unchecked)
            }
        }
    }

This worked for me:

for (int i = 0; i < dataGridView1.RowCount - 1; i++)
            {
                dataGridView1.Rows[i].DataGridView[0, i].Value = false;
            }