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ComboBox On DataRepeater Control Stocks Selected Index

I have a data repeater with each row using combobox. When you click the Add button, it adds a new row to the DataRepeater.

   public enum ColorTypes {Red, Green, Yellow}
   class LineItem
   {
       public ColorTypes Color {get;set;} 
   }

When you click the button on the form, it creates a new LineItem and retrains.

  private void btnAdd_Click(object sender, EventArgs e)
  {
       LineItem CopyItem = new LineItem();
       CurrentList= ((List<LineItem>)dataRepeater.DataSource); 

       CurrentList.Add(CopyItem);
       dataRepeater.DataSource = CurrentList;
  }

This correctly adds a new row to the DataRepeater, but now changing the combobox index changes both rows. Is there any special obligation you need to fulfill?

Here is my binding code:

 this.cbPackage.DataSource = System.Enum.GetValues(typeof(ColorTypes));
 this.cbPackage.DisplayMember = "Color";
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1 answer

After searching and adding things up MANY times, you CAN take it off! To correctly use the combo box in the DataRepeater, you will need to add the following events.

this.dataForm.ItemCloned += new Microsoft.VisualBasic.PowerPacks.DataRepeaterItemEventHandler(dataForm_ItemCloned);
this.dataForm.DrawItem += new Microsoft.VisualBasic.PowerPacks.DataRepeaterItemEventHandler(dataForm_DrawItem);
this.cbPackage.SelectedIndexChanged += new System.EventHandler(cbColor_SelectedIndexChanged);

MSDN ItemCloned

MSDN DrawItem

, ItemCloned, ( )

    void dataForm_ItemCloned(object sender,                Microsoft.VisualBasic.PowerPacks.DataRepeaterItemEventArgs e)
    {
        var combo = (ComboBox)e.DataRepeaterItem.Controls.Find("cbColor", false)[0];
        //Set the data source
        Combo.DataSource = System.Enum.GetValues(typeof(DataRepeater.ColorTypes));
    }

, . , , , , reset .

    /// <summary>
    /// After Item is cloned, draw item. The index is now available to select the proper data
    /// </summary>
    /// <param name="sender"></param>
    /// <param name="e"></param>
    void dataForm_DrawItem(object sender, Microsoft.VisualBasic.PowerPacks.DataRepeaterItemEventArgs e)
    {
        var dataRepeater = (Microsoft.VisualBasic.PowerPacks.DataRepeater)sender;
        var combo = (ComboBox)e.DataRepeaterItem.Controls.Find("cbPackage", false)[0];
        //Set the selected item based of the list item index
        Combo.SelectedItem = ((List<LineItem>)DataRepeater.DataSource)[e.DataRepeaterItem.ItemIndex].PackageType;  
    }

, , . . , , combobox.

 void cbPackage_SelectedIndexChanged(object sender, System.EventArgs e)
    {
        var combo = (ComboBox)sender;
        var dataRepeaterItem = (Microsoft.VisualBasic.PowerPacks.DataRepeaterItem)combo.Parent;
        var dataRepeater = (Microsoft.VisualBasic.PowerPacks.DataRepeater)combo.Parent.Parent;
        var source = ((List<ColorData>)DataRepeater.DataSource)[DataRepeaterItem.ItemIndex];
        source.PackageType = (DropData)combo.SelectedValue;        
    }

... , .

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