Export (0) Print
Expand All

DataRepeater.ItemTemplate Property

Gets a template that represents the DataRepeaterItem for a DataRepeater control.

Namespace:  Microsoft.VisualBasic.PowerPacks
Assembly:  Microsoft.VisualBasic.PowerPacks.Vs (in Microsoft.VisualBasic.PowerPacks.Vs.dll)

[BrowsableAttribute(false)]
public DataRepeaterItem ItemTemplate { get; }

Property Value

Type: Microsoft.VisualBasic.PowerPacks.DataRepeaterItem
An object that determines the layout and appearance of items in the DataRepeater control.

Use the ItemTemplate property to set properties that determine the run time appearance of all items in a DataRepeater control. In effect, you are actually setting properties of the DataRepeaterItem objects that will be created at run time. The items that you see in the DataRepeater at run time are copied from this object as they are scrolled into view.

At design time, when you select the section of the DataRepeater that contains the controls, the Properties window contains properties for the ItemTemplate. For example, setting the BackColor property of the ItemTemplate to Red causes all the items in the DataRepeater to be displayed with a red background.

At run time, if you change the properties of the ItemTemplate, you must call the BeginResetItemTemplate method before setting the properties, and then call the EndResetItemTemplate method to commit the changes.

The ItemTemplate property is also used to access the controls in the DataRepeaterItem at run time. For example, to retrieve the BackColor of a TextBox named IDTextBox, you would use the following code:

color BC = dataRepeater1.ItemTemplate.Controls["IDTextBox"].BackColor;

Some common customizations for the DataRepeater control include displaying the rows in alternating colors and changing the color of a field based on a condition. The following example shows how to perform these customizations. This example assumes that you have a DataRepeater control that is bound to the Products table in the Northwind database.

private void dataRepeater1_DrawItem(object sender, 
    Microsoft.VisualBasic.PowerPacks.DataRepeaterItemEventArgs e)
{
    // Alternate the back color. 
    if ((e.DataRepeaterItem.ItemIndex % 2) != 0)
    // Apply the secondary back color.
    {
        e.DataRepeaterItem.BackColor = Color.AliceBlue;
    }
    else
    {
        // Apply the default back color.
        e.DataRepeaterItem.BackColor = Color.White;
    }
    // Change the color of out-of-stock items to red. 
    if (e.DataRepeaterItem.Controls["unitsInStockTextBox"].Text == "0")
    {
        e.DataRepeaterItem.Controls["unitsInStockTextBox"].BackColor = Color.Red;
    }
    else
    {
        e.DataRepeaterItem.Controls["unitsInStockTextBox"].BackColor = Color.White;
    }
}

Show:
© 2015 Microsoft