Accept Tab in GridView Column

[wima]

Hello
I want to enter Tabs and Linebreaks in a textbox column. I tryed this, but it does not work.

private void radGridView1_CellBeginEdit(object sender, GridViewCellCancelEventArgs e)
{
   RadTextBoxEditor editor = radGridView1.ActiveEditor as RadTextBoxEditor;
   editor.AcceptsReturn = true;
   editor.AcceptsTab = true;
}

When I press the tab key, the cursor goes to the next column.

Greetings,
wima

[Jack]

Hello wima,

The build-in textbox editor in RadGridView doesn't support these features. We know about this limitation and we plan to improve the editor in one of our upcoming releases. Nevertheless, you can achieve the desired behavior by using a custom editor. I prepared a sample. Please consider the following code snippet:

void radGridView1_EditorRequired(object sender, EditorRequiredEventArgs e)
{
    if (e.EditorType == typeof(RadTextBoxEditor))
    {
        e.EditorType = typeof(MyTextBoxEditor);
    }
}

public class MyTextBoxEditor : BaseGridEditor
{
    public override object Value
    {
        get
        {
            MyTextBoxEditorElement editorElement = (MyTextBoxEditorElement)this.EditorElement;
            return editorElement.HostedControl.Text;
        }
        set
        {
            MyTextBoxEditorElement editorElement = (MyTextBoxEditorElement)this.EditorElement;
            if (value == null || value == DBNull.Value)
            {
                editorElement.HostedControl.Text = string.Empty;
            }
            else
            {
                editorElement.HostedControl.Text = value.ToString();
            }
        }
    }

    public override void BeginEdit()
    {
        base.BeginEdit();
        MyTextBoxEditorElement editorElement = (MyTextBoxEditorElement)this.EditorElement;
        editorElement.HostedControl.BackColor = Color.White;
    }

    protected override RadElement CreateEditorElement()
    {
        return new MyTextBoxEditorElement();
    }
}

public class MyTextBoxEditorElement : RadHostItem
{
    public MyTextBoxEditorElement()
        : base(new TextBox())

    {
        this.StretchHorizontally = true;
        this.StretchVertically = true;
        ((TextBox)this.HostedControl).AcceptsReturn = true;
        ((TextBox)this.HostedControl).AcceptsTab = true;
        ((TextBox)this.HostedControl).Multiline = true;
        ((TextBox)this.HostedControl).KeyDown += new KeyEventHandler(MyTextBoxEditorElement_KeyDown);
    }

    void MyTextBoxEditorElement_KeyDown(object sender, KeyEventArgs e)
    {
        if (e.KeyCode == Keys.Escape ||
            (e.KeyCode == Keys.Enter && e.Modifiers == Keys.Shift))
        {
            RadGridView grid = (RadGridView)this.ElementTree.Control;
            grid.GridBehavior.ProcessKeyDown(new KeyEventArgs(e.KeyCode));
        }
    }
}

I hope this helps. If you need further assistance, don't hesitate to contact me back.

Sincerely yours,
Jack
the Telerik team

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