Asp - User Controls VaryByParam?
Sep 23, 2010
Does VaryByParam also take into account the control properties and the logged in user? Let's say, I have a custom property: will VaryByParam cache based on unique values to that property?
Update:
I've added the <%@ OutputCache Duration="500" VaryByParam="*" %> to my user control. In the page the control is embedded in, I have this code:
protected void DropDownList1_SelectedIndexChanged(object sender, EventArgs e)
{
MyControl1.MyId = Convert.ToInt32(DropDownList1.SelectedValue);
}
I am getting sporadic null values for MyControl1 since I added the caching. Not quite determined why this is the case, yet. My additional question is why am I getting these null reference exceptions? It seems to only occur when I've added the caching code to the user control.
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