I am working on custom control. I am creating databound control. I have one property name RowDataSource that
accept DataRowCollection as data source and I bind control on OnDataBinding event. I have another property
name RowItem.
My code looks like this.

public DataRowCollection RowDataSource
{
	get
    {
		if (ViewState["rowDataSource"] == null)
		{
	        ViewState["rowDataSource"] = null;
		}
        return (DataRowCollection)ViewState["rowDataSource"];
    }
	set
    {
		if (value == null)
		{
			throw new ArgumentException("unvalid data source.", this.ID);
		}
		ViewState["rowDataSource"] = value;
	}
}
public RowCollections ExelRows
{
   get
   {
   // rCollection is object of RowCollections class
	if (rCollection == null)
        {
           rCollection = new RowCollections();
        }
        return rCollection;

   }
}

//OnDataBinding event code
protected override void OnDataBinding(EventArgs e)
{
	base.OnDataBinding(e);
	if (RowDataSource != null)
	{
		foreach (DataRow dr in RowDataSource)
		{
		    //RowItem is my class
			RowItem item = new RowItem();
			item.Text = dr[rTitle].ToString();
			this.ExelRows.Add(item);
		}
	}
}
   
//CreateChildControls method to render control		 
protected override void CreateChildControls()
{
	if (ExelRows.Count > 0)
	{
		//here i am rendering table structure to add exelrows and create control.
	}
}

Now, I am binding this control with DataRowCollection and It works file. I have one button in this control and
I am raising bubble event when button is clicked.

My problem is that when I click on button then CreateChildControls method is called first before OnDataBinding event.
so I am getting ExelRows.Count = 0.

so what I have to do to getting all rows on every bubble event of control.

regard

imrankhan

Hi,

You cannot get rows if they are not populated yet. In general we can get all populated controls in PreRender event. You can add your code logic there. 

CreateChildControls just renders the control to the screen. After rendering, call Protected Sub OnLoad to perform logic