datagridviewcombobox event

Aaron

Hi,

i have a datagridview with datagridviewcombobox. How do i insert a event when user selects a value from the datagridviewcombobox? trying to bounddata for 2nd column of the datagridview based on what user selects from the datagridviewcombobox which is in the 1st column.

8 Replies

Know the answer? Post it — somebody with the same question will find it here.

Kirtan Patel16y ago
Accepted answer
Friend ,

Here is your Solution
please check "Do you like this answer" check box if it helps you :)

you need to build your Own Event Delegate to Handle this Combobox Changed Event in DataGridView as it Does not have that event
private DataGridView _dataGridView;

private EventHandler _comboBoxSelectDelegate;
public Example()
{

// setup the datagridview here.
// hook up editing control showing event

_dataGridView.EditingControlShowing += new DataGridViewEditingControlShowingEventHandler(_dataGridView_EditingControlShowing);

// create a delegate for the method that will handle the event

_comboBoxSelectDelegate = new EventHandler(combo_SelectionChangeCommitted);

}
void _dataGridView_EditingControlShowing(object sender, DataGridViewEditingControlShowingEventArgs e)

{

// get the control from the event args.

ComboBox combo = e.Control as ComboBox;

if (combo != null)

{

// remove the event subscription if it exists.

combo.SelectionChangeCommitted -= comboSelectDelegate;

// add a subscription to the event

combo.SelectionChangeCommitted += comboSelectDelegate;

}

}

void combo_SelectionChangeCommitted(object sender, EventArgs e)

{

// handle the event.

ComboBox combo = sender as ComboBox;

if (combo != null)
{

MessageBox.Show(

string.Format("The combobox selected index is: {0}", combo.SelectedIndex)

);

}

}

0
Aaron16y ago
hi its still blank..

here's how i declare my datagridview:

            // gridEquipment (Datagridview)
            //
            this.gridEquipment.AutoSizeColumnsMode = System.Windows.Forms.DataGridViewAutoSizeColumnsMode.Fill;
            this.gridEquipment.ClipboardCopyMode = System.Windows.Forms.DataGridViewClipboardCopyMode.EnableWithoutHeaderText;
            this.gridEquipment.ColumnHeadersHeightSizeMode = System.Windows.Forms.DataGridViewColumnHeadersHeightSizeMode.AutoSize;
            this.gridEquipment.Columns.AddRange(new System.Windows.Forms.DataGridViewColumn[] {
            this.EquipmentTag,
            this.Desc,
            this.EquipmentCode,
            this.EquipmentCodeDesc,
            this.SpecCode,
            this.ROQty,
            this.UOM});
            this.gridEquipment.Cursor = System.Windows.Forms.Cursors.Arrow;
            this.gridEquipment.EditMode = System.Windows.Forms.DataGridViewEditMode.EditOnEnter;
            this.gridEquipment.Enabled = false;
            this.gridEquipment.ImeMode = System.Windows.Forms.ImeMode.Off;
            this.gridEquipment.Location = new System.Drawing.Point(9, 177);
            this.gridEquipment.MultiSelect = false;
            this.gridEquipment.Name = "gridEquipment";
            this.gridEquipment.ScrollBars = System.Windows.Forms.ScrollBars.None;
            this.gridEquipment.SelectionMode = System.Windows.Forms.DataGridViewSelectionMode.FullRowSelect;
            this.gridEquipment.ShowEditingIcon = false;
            this.gridEquipment.Size = new System.Drawing.Size(992, 331);
            this.gridEquipment.TabIndex = 6;
            this.gridEquipment.EditingControlShowing+= new System.Windows.Forms.DataGridViewEditingControlShowingEventHandler(gridEquip_EditingControlShowing);

            //
            // EquipmentTag (datagridviewcomboboxColumn)
            //
            this.EquipmentTag.AutoComplete = false;
            this.EquipmentTag.DisplayStyle = System.Windows.Forms.DataGridViewComboBoxDisplayStyle.ComboBox;
            this.EquipmentTag.HeaderText = "Equipment Tag";
            this.EquipmentTag.Name = "EquipmentTag";

i binded a data from sql to EquipmentTag which has combo box.

the name EquipmentTag belongs to the column. but the combobox in the cell is not name. is there a way to name it?
0
Kirtan Patel16y ago

ok try like this

ComboBox x = (ComboBox)sender;

if (combo != null)

{

MessageBox.Show(x.Name);

}

let me know what you get in msg box ..

0
Aaron16y ago
ya i did this:

   private void comBoxEquipSelectionChange(object sender, EventArgs e)
        {

            ComboBox combo = sender as ComboBox;

            if (combo != null)
            {

                MessageBox.Show(string.Format("The combobox selected index is: {0}", combo.SelectedIndex));
                MessageBox.Show(combo.Name);
            }

        }

the popup is blank.
0
Kirtan Patel16y ago
In following Write Code to check which combo box is Accessed

void combo_SelectionChangeCommitted(object sender, EventArgs e)

{

// handle the event.

ComboBox combo = sender as ComboBox;

if (combo != null)
{

MessageBox.Show(string.Format("The combobox selected index is: {0}", combo.SelectedIndex));
//Write it Like Below
if(combo.Name == "somthing")
{
// do somthing ;
}
else if(combo.Name == "another")
{

// do somthing ;

}

}

}
0
Aaron16y ago
thanks again. i'm using dataGridViewComboBoxColumn for my combo boxes (using design view to generate). i did a combo.name like what you mention it appears to be blank.
0
Kirtan Patel16y ago
in SelectionChangeCommitted we are also getting Sender Object

you can differentiate which combo box fired event

by

if(combo.Name == somthing)
{
// do somthing ;
}
else if(combo.Name == "another")
{

// do somthing ;

}
0
Aaron16y ago
Thanks for the help. I have a few combo boxes on the grid and different columns. how do i differentiate which combo box i click?
0