Custom Widget with MediaContentSelectorView - Front- & Back-End Development - Front- & Back-End Development - Progress Community
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Custom Widget with MediaContentSelectorView

  • Custom Widget with MediaContentSelectorView
  • Hi,

    I am working to create a custom widget having functionality to upload the image and show that on UI. I am using MediaContentSelectorView for this purpose and facing an issue "Object reference not set to an instance of an object". I have tried many things and suggestions as found in sitefinity forums but no success.

    Then I have commented whole code related to MediaContentSelectorView except the mark up on Designer(.ascx) file but the exception is same.

    I have used this code:

    In SliderControlDesigner.ascx file:

    <%@ Register Assembly="Telerik.Sitefinity" Namespace="Telerik.Sitefinity.Modules.Libraries.Web.UI.Designers" TagPrefix="sf" %>


      ParentType="Telerik.Sitefinity.Libraries.Model.DocumentLibrary"                                  LibraryBinderServiceUrl="~/Sitefinity/Services/Content/DocumentLibraryService.svc/"                             MediaContentBinderServiceUrl="~/Sitefinity/Services/Content/DocumentService.svc/"                             MediaContentItemsListDescriptionTemplate="Telerik.Sitefinity.Resources.Templates.Designers.Libraries.Documents.DocumentItemDescriptionTemplate.htm"


    In SliderControlDesigner.cs:

            protected virtual MediaContentSelectorView SelectorView


                    return this.Container.GetControl<MediaContentSelectorView>("SelectorView", true);

    In GetScriptDescriptors() method:

    descriptor.AddComponentProperty("selectorview", this.SelectorView.ClientID);

    I have commented whole code related to MediaContentSelectorView except the mark up on SliderControlDesigner.ascx  file but the exception is same.

    I am working on sitefinity version 8.2.5900.0 .


    Please give me your suggestions and help me to get it resolved.


    Thank you,

    Prateek Tayal




  • Hi Prateek,

    You can check the implementation of the Image selector described in that documentation article:

    Svetoslav Manchev
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