GridView ViewDefinition problem

[paul]

Hi

In my project I have the following senario:

ColumnGroupsViewDefinition

 

view =  new ColumnGroupsViewDefinition();

 

 

 

 

view.ColumnGroups.Add(new GridViewColumnGroup("Group"));

view.ColumnGroups.Add(new GridViewColumnGroup("ID"));

view.ColumnGroups.Add(new GridViewColumnGroup("Amount"));

view.ColumnGroups.Add(new GridViewColumnGroup("Date "));

view.ColumnGroups.Add(new GridViewColumnGroup("method"));

view.ColumnGroups.Add(new GridViewColumnGroup("request"));

view.ColumnGroups[3].Rows.Add(new GridViewColumnGroupRow());

view.ColumnGroups[4].Rows.Add(new GridViewColumnGroupRow());

view.ColumnGroups[5].Rows.Add(new GridViewColumnGroupRow());

 

view.ColumnGroups[3].Rows[0].Columns.Add(this.grid1.Columns["Now"]);

view.ColumnGroups[3].Rows[0].Columns.Add(this.grid1.Columns["yesterday"]);

view.ColumnGroups[4].Rows[0].Columns.Add(this.grid1.Columns["now"]);

view.ColumnGroups[4].Rows[0].Columns.Add(this.grid1.Columns["yesterday"]);

view.ColumnGroups[5].Rows[0].Columns.Add(this.grid1.Columns["now"]);

view.ColumnGroups[5].Rows[0].Columns.Add(this.grid1.Columns["yesterday"]);

 

DataTable

 

 

 

table = new DataTable();

 

 

 

 

 

 

table.Columns.Add(

 

 

"grp",typeof(string));

 

 

 

 

table.Columns.Add("ID",typeof(string));
table.Columns.Add("Amt",typeof(string));
table.Columns.Add("date",typeof(string));
table.Columns.Add("metd",typeof(string));
table.Columns.Add("req",typeof(string));

 

grid1.MasterGridViewTemplate.AutoGenerateColumns = false;

 

grid1.DataSource = table;

grid1.ViewDefinition = view;

My problem is that I get "Object reference not set to an instance of an object." error on last line that is:
"grid1.ViewDefinition = view;"

I have tryed many things to solve this but I couldn't.


Any help will be appreciated.

Thanks In advance.

[Svett]

Hi Paul,

Thanks for writing.

The issue appears because you are trying to define the view, before you have generated the columns of your RadGridView instance. I recommend defining the view after you have created and added the columns to your grid. Then you will be able to use the columns you need in order to create the view definition.

Let me know if you additional questions.

All the best,
Svett
the Telerik team