make group rows in datagrid dynamically

Question

Hi,

I wanna make group rows in datagrid , but i wanna make it dynamically through c# code not Xaml one,

please Help ASAP

Answer 1

Hi Pouyas,

   I think you want to add multiple columns into a datagrid through code.   I am having a list of items, Vals, which has 2 properties n1,n2 .  Se my code below .  I am binding that list to the datagrid through code, only after setting the AutoGenerateColumns  property to false.

  public class Vals
    {
       
        public int n1 {get;set;}
        public int n2 { get; set; }
        public Vals()
        { }
    }

 

 List<Vals> mylist1 = new List<Vals>();
            
            for (int i = 0; i < 10; i++)
            {
                Vals v1 = new Vals();
                v1.n1 = i * 3;
                v1.n2 = i * 5;
                mylist1.Add(v1);
            }
            dataGrid1.AutoGenerateColumns = false;
            dataGrid1.ItemsSource = mylist1;
         
            DataGridTextColumn dgc = new DataGridTextColumn();
            dgc.Header = "Column1";
            dgc.Binding = new Binding("n1");
            dataGrid1.Columns.Add(dgc);
            
            DataGridTextColumn dgc1 = new DataGridTextColumn();
            dgc.Header = "Column2";
            dgc.Binding = new Binding("n2");
            dataGrid1.Columns.Add(dgc1);
         

Hope It Helps

Answer 2

I wrote your code but i get exception and when i trace it i go to:

 private void Application_UnhandledException(object sender, ApplicationUnhandledExceptionEventArgs e)
        {
            // If the app is running outside of the debugger then report the exception using
            // the browser's exception mechanism. On IE this will display it a yellow alert
            // icon in the status bar and Firefox will display a script error.
            if (!System.Diagnostics.Debugger.IsAttached)
            {

                // NOTE: This will allow the application to continue running after an exception has been thrown
                // but not handled.
                // For production applications this error handling should be replaced with something that will
                // report the error to the website and stop the application.
                e.Handled = true;
                Deployment.Current.Dispatcher.BeginInvoke(delegate { ReportErrorToDOM(e); });
            }
        }

Answer 3

Hi Pouyas,

  Just change the  code  to dgc1  instead of dcg here     (Only for the second datagridtextcolumn )

         Change                    
         

            DataGridTextColumn dgc1 = new DataGridTextColumn(); 
            dgc.Header = "Column2"; 
            dgc.Binding = new Binding("n2"); 
            dataGrid1.Columns.Add(dgc1); 
     

     TO

         DataGridTextColumn dgc1 = new DataGridTextColumn(); 
            dgc1.Header = "Column2"; 
            dgc1.Binding = new Binding("n2"); 
            dataGrid1.Columns.Add(dgc1); 

  Hope it Helps 

Answer 4

It works but actually i want to have sub headers lfor example i have address header and in sub headers i have : city,street,postal code

Answer 5

Hi Pouyas,

Please check if below grouping DataGrid is what you want.

To change the group item in code, you can set PropertyGroupDescription of PagedCollectionView in code like below

PagedCollectionViewName.GroupDescription.Clear();

PagedCollectionViewName.GroupDescriptions.Add(new PropertyGroupDescription("Gender"));

http://timheuer.com/blog/archive/2009/04/08/grouping-in-silverlight-datagrid.aspx

 

Best Regards,

Answer 6

Hi Shi,

thank you for your answer, but it can't help me. Actually i want to design two rows of column headers, first row is super headers, like what i said before (Address) and in second row i want Street, postal code below the Address cell

Answer 7

Hi Pouyas,

Please have a look at below article. Hope it helps

http://www.codeproject.com/Articles/31779/Silverlight-DataGrid-with-Dynamic-Multiple-Row-Col

 

Best Regards,