how to use RadWaitingBarElement in RadGridView

[Tomas Novak]

Hello.

Please, could you give me an adwace how to use RadWaitingBarElement in RadGridView and run this element. I have try used it in cell_formating, but it do not work.

(it is trial Version: 2010.1 504 , C#, vs 2008 express)

Thank you for advice or source code.

void radGridView1_CellFormatting(object sender, CellFormattingEventArgs e)
{
if (e.CellElement.RowIndex < 0) return;
if (((GridViewDataColumn)e.CellElement.ColumnInfo).FieldName == "test")
{
RadWaitingBarElement element = new RadWaitingBarElement();
element.StretchHorizontally = true;
element.StretchVertically = true;
element.waitingTimer = this.timer1;//timer is running
e.CellElement.Children.Add(element);
}

[Alexander]

Hello Tomas Novak,

Thank you for contacting us.

I would suggest that you use RadWaitingBar control instead of RadWaitingBarElement. Using the control allows you to start waiting without any additional timers. Please consider the code snippet:

private void radGridView1_CellFormatting(object sender, CellFormattingEventArgs e)
{
    GridDataCellElement cell = e.CellElement as GridDataCellElement;
    GridViewDataColumn column = cell.ColumnInfo as GridViewDataColumn;

    if (cell == null || column == null || cell.RowIndex < 0) return;
    if (column.FieldName == "test")
    {
        bool waitingBarAdded = false;
        foreach (RadElement element in cell.Children)
        {
            RadHostItem hostItem = element as RadHostItem;
            if (hostItem != null)
            {
                RadWaitingBar hostedControl = hostItem.HostedControl as RadWaitingBar;
                if (hostedControl != null)
                {
                    waitingBarAdded = true;
                }
            }
        }
        if (!waitingBarAdded)
        {
            RadWaitingBar waitingBar = new RadWaitingBar();
            waitingBar.WaitingStep = 1;
            waitingBar.WaitingSpeed = 1;
            waitingBar.StartWaiting();

            RadHostItem hostItem = new RadHostItem(waitingBar);
            e.CellElement.Children.Add(hostItem);
        }
    }
}

RadWaitingBar uses an internal timer and you only need to call the StartWaiting() method in order to make it running. You do not need an additional timer to make the RadWaitingBar move. Please describe your exact scenario and why you need an external timer. This scenario may require a custom solution.

A second approach is to use RadProgressBarElement. You can see an example in our Examples application, section GridView >> Column Types.

Best regards,
Alexander
the Telerik team

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[Tomas Novak]

This is exactly what I was looking for.
 For me your code works exelent so external timer will not be needed.

Thank very much.

Tomas