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My page logic is that I click on an 'Apply' button, then in the Apply_Click method, I do some data binding, such as: Grid1.Datasource = xxx; Grid1.DataBind(); . And the grid can show properly on the page. But when I click on other buttons on this page (for example: click the filter on the grid) to trigger a post back, the content on the grid just disappears (The datasource is stored in a session, so it's not datasource's problem). I need to add databind() to Page_Load() to prevent this from happening. But this is very weird and feels not right. Can you help me locate the real problem?
The same issue is happening bothe in Grid and OrgChart.
