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Fill second Column with type GridViewComboBoxColumn on selection change of frist GridViewComboBoxColumn

9 Answers 338 Views

GridView

This is a migrated thread and some comments may be shown as answers.

9 Answers, 1 is accepted

answered on 19 May 2010, 03:35 PM

Hello Rasha Abdelhameed,

I suppose that you want to change the cell value based on another cell's value. If this is the case, you can do this by handling the ValueChanged event. Here is a sample:

void radGridView1_ValueChanged(object sender, EventArgs e)

{

RadComboBoxEditor editor = sender as RadComboBoxEditor;

if (editor != null && ((GridViewDataColumn)this.radGridView1.CurrentColumn).UniqueName == "c1")

{

RadComboBoxEditorElement editorElement = editor.EditorElement as RadComboBoxEditorElement;

this.radGridView1.CurrentRow.Cells["c2"].Value = editorElement.SelectedIndex + 1;

this.radGridView1.CurrentRow.InvalidateRow();

}

I hope this helps. If you have further questions, please specify the desired behavior in detail. I am looking to your reply.

Kind regards,
Jack
the Telerik team

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answered on 21 May 2010, 02:10 PM

Hi Rasha Abdelhameed,

I am not sure that I understand your scenario. You can still use the ValueChanged event to change the data source of the desired column. However, this will change the data source for the whole column and because of this all value in the column. Alternative option is to handle CellFormatting event and display to customize the displayed value. Here is a sample:

void radGridView1_CellFormatting(object sender, CellFormattingEventArgs e)

{

GridViewDataColumn column = e.CellElement.ColumnInfo as GridViewDataColumn;

if (column != null && column.UniqueName == "Value")

{

e.CellElement.Text = GetLookupValue((int)e.CellElement.RowInfo.Cells["Combo"].Value);

}

Greetings,

Jack
the Telerik team

answered on 27 May 2010, 09:53 AM

Hello Rasha Abdelhameed,

I understand. The solution presented in this forum post implements exactly the scenario you are describing. However, you have to handle the CellFormatting event and update cell text manually based on your other column like I said in my previous post. This is so, because the DataSource property is responsible for the whole column and changing it will cause all cell values to change. I hope this helps.

All the best,
Jack
the Telerik team

answered on 27 May 2010, 11:58 AM

hello Jack ,
this is solve my problem

private void dgridSubParts_CellEditorInitialized(object sender, GridViewCellEventArgs e)
        {
            GridViewRowInfo row = e.Row as GridViewRowInfo;
            RadComboBoxEditor editor = dgridSubParts.ActiveEditor as RadComboBoxEditor;
            editoropertaion = dgridSubParts.ActiveEditor as RadComboBoxEditor;
            try
            {
                phaseID = Convert.ToInt32(dgridSubParts.CurrentRow.Cells["colPhase"].Value);
                if (e.ColumnIndex == 0)
                {

                    editor.ValueChanging += new ValueChangingEventHandler(Editor_ValueChanging);
                    ((RadComboBoxEditorElement)(editor).EditorElement).RightToLeft = true;

                }
                else if (e.ColumnIndex == 1 && phaseID != 0)
                {
                    editor.ValueChanging -= new ValueChangingEventHandler(Editor_ValueChanging);

                    ((RadComboBoxEditorElement)(editor).EditorElement).RightToLeft = true;
                    ((RadComboBoxEditorElement)(editor).EditorElement).DropDownStyle = RadDropDownStyle.DropDownList;

                    ((RadComboBoxEditorElement)(editor).EditorElement).DisplayMember = Man_Set_Operation.ColumnNames.OperationName;
                    ((RadComboBoxEditorElement)(editor).EditorElement).ValueMember = Man_Set_Operation.ColumnNames.OperationId;
                    ((RadComboBoxEditorElement)(editor).EditorElement).DataSource = frmAddPart.ReturnOpeartion(phaseID);
                    ((RadComboBoxEditorElement)(editor).EditorElement).SelectedIndex = 0;

                }

            }
            catch
            {
            }

        }

void Editor_ValueChanging(object sender, ValueChangingEventArgs e)
        {
            try
            {
                int index = dgridSubParts.CurrentCell.RowIndex;
                dgridSubParts.CurrentRow.Cells["colOperation"].BeginEdit();

                if (index == -1)
                {dgridSubParts.Rows.RemoveAt(dgridSubParts.RowCount-1);
                dgridSubParts.CurrentRow.Cells["colOperation"].BeginEdit();
                   // dgridSubParts.CurrentRow = dgridSubParts.Rows[dgridSubParts.RowCount - 2];
                }

            }
            catch
            {
            }
            // dgridSubParts.CurrentColumn = dgridSubParts.Columns["colOperation"];

        }