Question

I have a user control named ActivityGrid which takes a list of object as a parameter in it’s constructor.

public ActivityGrid(List<clsActivityRow> ActivityData)
{
   bindData(ActivityData);
}

I need to bind this user control in a gridView called parentGrid, so I used Templatefield.

<asp:GridView ID="GridViewParent" runat="server" AutoGenerateColumns ="False">
<Columns>
   <asp:TemplateField>
      <ItemTemplate>
         <tr>
            <td colspan="100%">
               <uc1:ActivityGrid ID="ActivityGrid1" runat="server" />
            </td>
         </tr>
      </ItemTemplate>
   </asp:TemplateField>
</Columns>
</asp:GridView> 

How do I pass the list of object in this user control while it is
bound inside a gridview?

I have the list of object List<clsActivityRow> ActivityData ready in the code behind.

Answer 1

You need to find the ActivityGrid1 object in every row of GridViewParent in its RowDataBound event and assign datasource.

protected void GridViewParent_RowDataBound(Object sender, GridViewRowEventArgs e)
{           
        if (e.Row.RowType == DataControlRowType.DataRow)
        {                
          ActivityGrid ActivityGrid1= (ActivityGrid )e.Row.FindControl("ActivityGrid1");                    
                if (ActivityGrid1 != null)
                {
                    ActivityGrid1.DataSource = SomeMethodToReturnDataSource();                       
                    ActivityGrid1.DataBind();
                }
         }          
}

or if your control has grid view i.e ActivityGrid1 has gridView1 then you can find gridView1 in ActivityGrid1

protected void GridViewParent_RowDataBound(Object sender, GridViewRowEventArgs e)
{           
        if (e.Row.RowType == DataControlRowType.DataRow)
        {                
          ActivityGrid ActivityGrid1= (ActivityGrid )e.Row.FindControl("ActivityGrid1");                    
                if (ActivityGrid1 != null)
                {
                    GridView gridView1 = (ActivityGrid )ActivityGrid1 .FindControl("gridView1");    
                    gridView1.DataSource = SomeMethodToReturnDataSource();                          
                    gridView1.DataBind();
                }
         }          
}