CODEWITHSUNDEEP
c#winformsdatagridviewdatatable
rul3z
rul3z

Reputation: 183

Hide or Disable CheckBox in Last Row of DataGridView

I have a datagridview that is loading by the datatable..

//dgvApprovazione is my DataGridView
//dt is my DataTable
dgvApprovazione.DataSource = dt;

DataTable represent part of table in db.

I have this situation : enter image description here

I try with this code 

foreach (DataGridViewRow row in dgvApprovazione.Rows)
{
    if (row.Cells[3].Value != null)
    {
        //CheckBox ckb = row.Cells[3] is check
        if ((Convert.ToBoolean(row.Cells[3].Value)) == true)
        {
            row.Cells[3].ReadOnly = true;
        }
    }
}

But i think that problem is in setting DataTable dt... How i delete that checkbox ?!? And is a second question .. how i delete a last row in datatable AND in datagridview .

Upvotes: 2

Views: 2433

Answers (2)

Reza Aghaei
Reza Aghaei

Reputation: 125197

To disable adding new row (remove the last new row):

To keep adding new row enabled but hide and disable CheckBox

  • Handle CellPainting and don't render the check box
  • Handle CellContentClick and check if the cell is in the last row don't do anything
  • To prevent an automatic check and uncheck, set the column ReadOnly property to false.

If you want to don't render the check box, you should handle CellPainting event and prevent drawing the check box:

private void dataGridView1_CellPainting(object sender, DataGridViewCellPaintingEventArgs e)
{
    // I suppose your check box is at column index 0
    if (e.ColumnIndex == 0 && e.RowIndex == dataGridView1.NewRowIndex)
    {
        e.PaintBackground(e.ClipBounds, true);
        e.Handled = true;
    }
}

This doesn't prevent a click on the cell, if you want to prevent running the logic that you have on click for last row, you should handle CellContentClick event and check if the clicked cell is not the new row:

private void dataGridView1_CellContentClick(object sender, DataGridViewCellEventArgs e)
{
    // I suppose your check box is at column index 0
    // To exclude header cell:  e.RowIndex >= 0  
    // To exclude new row:      celle.RowIndex!=dataGridView1.newRowIndex

    if (e.ColumnIndex == 0 && e.RowIndex >= 0 && e.RowIndex!=dataGridView1.newRowIndex)
    {
        //Put the logic here
    }
}

Upvotes: 3

Kostas Balis
Kostas Balis

Reputation: 122

To delete last row DataGridView.Rows.RemoveAt(DataGridView.Rows.Count - 1)

Same thing for: DataTable.Rows.RemoveAt(DataTable.Rows.Count - 1)

To not allow new empty rows at all set DataGridView.AllowUserToAddRows

Also there is not much of a point in deleting that checkbox from logic perspective as it belongs to the checkbox column and is supposed to be there.

Upvotes: 1

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