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POAccessing the property inside Dynamic control gives Null reference exception
 

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  1. POAccessing the property inside Dynamic control gives Null reference exception
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    <p>I have an app with 24 different Forms. They have some security options based on which the 5 different buttons Submit, Approve, 2nd Approve, 3rd Approve, Reject etc get enabled disabled.</p> <p>Now I designed a MainForm that has all the buttons and the security code for them. I have created eachform as a usercontrol and load them dynamically based on which form the user wants. My loading works perfectly fine. I load the control and Add it to the place holder in the Page load event of the main page. </p> <p>Now when the user selects the Submit button I want to call the Save method inside the usercontrol of the Form as each form will have a separate Save. So when I try this code snippet I get the Null reference error. Do let me know how to resolve it. </p> <pre><code>Private UCDynamic As UserControl </code></pre> <p>Then on Page Load event I use this code</p> <pre><code>Protected Sub Page_Load(ByVal sender As Object, ByVal e As System.EventArgs) Handles Me.Load If not Me.IsPostBack UCDynamic = LoadControl("Controls/BkCode.ascx") Me.PlaceHolderForm.Controls.Add(UCDynamic) End if </code></pre> <p>Then on the ButtonClick Event for Submit I do this</p> <pre><code> Protected Sub Save_OnClick(ByVal sender As Object, ByVal e As EventArgs) Save() End Sub Sub Save() CType(Me.UCDynamic, controls_BkCode).Save() End Sub </code></pre> <p>Thats where I get the cast Null reference error. So is it that after post back the control no longer exist on the page. Any ideas will be greatly appreciated.</p> <p>Thanks. </p>
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    1. USJoel Coehoorn
    1. USAbbi
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