RadGridView DataSource

[勇誌]

Hi , I'm a new blood in programs. 

recently, I tried to build a RadGridView and fill in data from database

And I create a button if the user wanna export the data in RadGridView 

 

 RadGridView rgv = new RadGridView();

 rgv.DataSource = dt;

 GridViewSpreadExport spreadExporter = new GridViewSpreadExport(rgv);
            spreadExporter.ExportVisualSettings = true;
            SpreadExportRenderer exportRenderer = new SpreadExportRenderer();
            spreadExporter.RunExport(filegoalpath, exportRenderer);

here is the method i used  , dt has data i wanna export .

so i used rgv to keep the data i wanna export and use these four program to export an excel 

but the program always tell me that my rgv is null and check it cant be null

after i checked , i found that rgv.DataSource really keeped my data in datatable

but rgv.Columns.Count is 0 and rgv.Rows.Count is 0 ,too.

 

actually this is my first time to write a program in C# 

but i really want to learn it well

so ... hope you can help me to solve my problem :(
plz !!!!

 

[Dess | Tech Support Engineer, Principal]

Hello,  

When you add a RadGridView programmatically at run time, note that it is necessary to initialize its BindingContext before setting the DataSource property. Thus, the grid will be successfully filled with data which can be exported later. I have prepared a sample project for your convenience.

I hope this information helps. 

Regards,
Dess
Progress Telerik

[勇誌]

Doss ! Thanks for your help ! it really helps me a lot !
i'm so happy that you can answer my question :'(
Honestly , thank you !