User Control calling function in another user control? RSS

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  rachelreese

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  User Control calling function in another user control?

  Aug 06, 2003 07:18 PM|LINK

  Hey there folks, I have a user control (UCInside, e.g.) inside another user control (UCOutside). I want to call a function that's contained in UCInside from UCOutside. Since UCInside has an associated class (let's call it ClassInside), I figured I could call the function by a simple

  ClassInside.UCInside.MyFunction(params)

  This calls the function, but I then can't seem to access any of web controls in UCInside from that function. Specifically, I have a RadioButtonList defined in UCInside. I want to retrieve, and then use, the selectedValue in MyFunction. I get an 'object reference not set to instance of object' error on

  strMyValue= Me.radiobuttonlist1.SelectedValue

  Can I not call the function from the outside user control? Since UCInside is in UCOutside, it won't help to raise an event, right? Thanks, Rachel
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  rachelreese

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  Re: User Control calling function in another user control?

  Aug 07, 2003 01:36 AM|LINK

  Thanks guys, I got it. I CAN call another user control's function from a user control containing that one. The confusion came because I had programmatically added my user control (as follows):

  MyPlaceHolder.Controls.Add(LoadControl("UCInside.ascx"))

  So, I couldn't just say

  ClassInside.UCInside.MyFunction(params)

  When this threw errors at me, I declared and instantiated a second copy of the inside user control, and called that version's function. I should have just used the version of the control I already had on the page, and typecast it.

  CType(MyPlaceholder.Controls.Item(0), UCInside).MyFunction(params)

  -Rachel