Issue inserting to database on submit the page goes blank

Hi guys,
I'm new to asp.net, can someone please help me with this. 
I'm trying to insert few values to a table, when i press the submit button the aspx page goes blank and i don't get any error message. I'm not able to find where the error is.
The code:

Protected Sub AddMInfo_Click(ByVal sender As Object, ByVal e As System.EventArgs) Handles AddMInfo.Click Dim dbsource As SqlDataSource

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