DataGrid: Missing template. Cannot initialize System.Wi... RSS

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  kobruleht

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  DataGrid: Missing template. Cannot initialize System.Windows.Controls.DataGridTemplateColumn

  Feb 20, 2009 07:40 PM | LINK

  After adding button column to subclassed DataGrid I got strange exception

  TypeInitializationException: The type initializer for 'Missing template.  Cannot initialize System.Windows.Controls.DataGridTemplateColumn.' threw an exception.

  several times. How to fix ?

  Andrus. 

  Sublcassed DataGrid contains method to create grid column:

  namespace AWSilverlightLOB.Controls {

  public class DataGridBase : DataGrid {

  internal void Create() {

  ItemsSource = ...

  DataGridTemplateColumn xtemplateColumn = new DataGridTemplateColumn();xtemplateColumn.CellTemplate = (DataTemplate)Resources["ColButton"];

  Columns.Add(xtemplateColumn);

  }}}

  namespace AWSilverlightLOB.Content {

  public abstract class UserControlBase : UserControl { }

  }

   

  XAML:

   

  <userControlBase:UserControlBase x:Class="Cart.ProductSearch"

  xmlns="http://schemas.microsoft.com/client/2007"

  xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"

  xmlns:userControlBase="clr-namespace:AWSilverlightLOB.Content"

  >

  <UserControl.Resources>

  <DataTemplate x:Key="ColButton" >

  <Button Click="AddToCart_Click" Content="Add to cart" Margin="3,0" />

  </DataTemplate>

   

  Exception occurs in browser if DataGrid is being rendered:

  ---------------------------
  Windows Internet Explorer
  ---------------------------
  Problem
  Code: 4004   
  Category: ManagedRuntimeError      
  Message: System.TypeInitializationException: The type initializer for 'Missing template.  Cannot initialize System.Windows.Controls.DataGridTemplateColumn.' threw an exception.

     at System.Windows.Controls.DataGrid.PopulateCellContent(Boolean forceTemplating, Boolean isCellEdited, DataGridColumn dataGridColumn, DataGridRow dataGridRow, DataGridCell dataGridCell)

     at System.Windows.Controls.DataGrid.AddNewCellPrivate(DataGridRow row, DataGridColumn column)

     at System.Windows.Controls.DataGrid.CompleteCellsCollection(DataGridRow dataGridRow)

     at System.Windows.Controls.DataGrid.GenerateRow(Int32 rowIndex)

     at System.Windows.Controls.DataGrid.GetEdgedExactRowHeight(Int32 rowIndex)

     at System.Windows.Controls.DataGrid.UpdateDisplayedRows(Int32 newFirstDisplayedRowIndex, Double displayHeight)

     at System.Windows.Controls.DataGrid.ComputeScrollBarsLayout()

     at System.Windows.Controls.DataGrid.MeasureOverride(Size availableSize)

     at System.Windows.FrameworkElement.MeasureOverride(IntPtr nativeTarget, Single inWidth, Single inHeight, Single& outWidth, Single& outHeight)    

   

  Microsoft Community Contributor
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  Allen Chen –...

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  Re: DataGrid: Missing template. Cannot initialize System.Windows.Controls.DataGridTemplateColumn

  Feb 23, 2009 09:21 AM | LINK

  Hi,

  Could you share a demo project for me to test?

  Sincerely,
  Allen Chen
  Microsoft Online Community Support
  
  Please remember to mark the replies as answers if they help and unmark them if they provide no help.
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  kobruleht

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  Re: DataGrid: Missing template. Cannot initialize System.Windows.Controls.DataGridTemplateColumn

  Feb 23, 2009 10:31 AM | LINK

  The issue was causes by not calling InitializeComponent() in subclassed DataGrid constructor.

  Resources[] returns null and this causes this strange error message. After adding DataGridBase constructor with call to InitializeComponent()

  problem has solved.

  I you still needs demo project, please let me know.

  Andrus-

  Microsoft Community Contributor
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  amyo

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  Re: DataGrid: Missing template. Cannot initialize System.Windows.Controls.DataGridTemplateColumn

  Feb 23, 2009 11:55 AM | LINK

  kobruleht

  xtemplateColumn.CellTemplate = (DataTemplate)Resources["ColButton"];

  Is ColButton DataTemplete inside DataGridBase or inside ProductSearch?

  In your case you are accessing ColButton DataTemplete of DataGridBase.

   

  Hope this will help you.

  Please Mark as Answer if this helps you.

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  kobruleht

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  Re: DataGrid: Missing template. Cannot initialize System.Windows.Controls.DataGridTemplateColumn

  Feb 23, 2009 12:06 PM | LINK

  amyo,

  DataTemplate is inside DataGridBase .

  Adding InitializeComponent() call to DataGridBase constructor solves issue.

  Andrus.

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  SASilver

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  Re: DataGrid: Missing template. Cannot initialize System.Windows.Controls.DataGridTemplateColumn

  Aug 18, 2009 04:28 PM | LINK

  Hello,

  I am using an AutoCompleteBox in a DataGrid. Im setting the values as a property of the object that the grid is bound to.

  I have an implementation of this in another page that works fine. But since shifting to SIlverlight 3 i've been getting this error. The data is perfect and is bound to ItemsSource but does not display the data instead shows this javascript error.
  

   "The type initializer for 'Missing template.  Cannot initialize System.Windows.Controls.DataGridTemplateColumn.' threw an exception. "

  Any suggestions?
  

  Thanks
  

   

   

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  khurram.ali

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  Re: DataGrid: Missing template. Cannot initialize System.Windows.Controls.DataGridTemplateColumn

  Sep 23, 2011 06:40 AM | LINK

  can you please elaborate your point or share the some code? :S
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  khurram.ali

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  Re: DataGrid: Missing template. Cannot initialize System.Windows.Controls.DataGridTemplateColumn

  Sep 23, 2011 06:40 AM | LINK

  kobruleht

  The issue was causes by not calling InitializeComponent() in subclassed DataGrid constructor.

  Resources[] returns null and this causes this strange error message. After adding DataGridBase constructor with call to InitializeComponent()

  problem has solved.

  I you still needs demo project, please let me know.

  Andrus-

  can uou please elaborate or share some code? :S