How do I make XAML DataGridColumns fill the entire DataGrid

Question

I am using DataGrids in XAML  not Silverlight  with resizable columns  the DataGrid will expand if the user resizes the screen   Currently if the widths of all the DataGrid columns are less than the width of the DataGrid I get an extra  column  appearing which is unclickable and serves no purpose   Does anyone know how to make one column always resize to fill all the remaining space

User · Answer

Make sure your DataGrid has Width set to something like  Binding Path ActualWidth  RelativeSource  RelativeSource Mode FindAncestor AncestorType Window AncestorLevel 1     Like that  your setting of Width     attribute on DataGrid Columns DataGridXXXXColumn elements should work

User · Answer

I added a HorizontalAlignment  Center   The default is  Strech   and it solved my problem because it made the datagrid only as wide as needed   Removed the datagrid s Width setting if you have one

User · Answer

As noted  the ColumnWidth     worked perfectly well for a DataGrid in XAML   I used it in this context     lt DataGrid ColumnWidth     ItemsSource   Binding AllFolders  Mode TwoWay  UpdateSourceTrigger PropertyChanged     gt

User · Answer

This will not expand the last column of the xaml grid to take the remaining space if  AutoGeneratedColumns  True

User · Answer

Set the columns Width property to be a proportional width such as

User · Answer

If you use Width     the column will fill to expand the available space   If you want all columns to divide the grid equally apply this to all columns  If you just want one to fill the remaining space just apply it to that column with the rest being  Auto  or a specific width   You can also use Width  0 25    for example  if you want the column to take up 1 4 of the available width

User · Answer

Another spin on the same theme   protected void OnWindowSizeChanged object sender  SizeChangedEventArgs e        dataGrid Width   e NewSize Width -  e NewSize Width    1        foreach  var column in dataGrid Columns               column Width   dataGrid Width   dataGrid Columns Count

User · Answer

My 2 Cent -   Very late to party  DataGrid -  Column -  Width     only work if DataGrid parent container has fix width   example   i put the DataGrid in Grid -  Column whose width  Auto  then Width     in DataGrid does not work but if you set Grid -  Column Width  450  mean fixed then it work fine

User · Answer

set ONE column s width to any value  i e  width

User · Answer

For those looking for a C  workaround   If you need for some reason to have the  AutoGeneratedColumns  enabled  one thing you can do is to specify all the columns s width except the ones you want to be auto resized  it will not take the remaining space  but it will resize to the cell s content    Example  dgShopppingCart is my DataGrid    dgShoppingCart Columns 0  Visibility   Visibility Hidden   dgShoppingCart Columns 1  Header    Qty   dgShoppingCart Columns 1  Width   100  dgShoppingCart Columns 2  Header    Product Name     This will be resized to cell content   dgShoppingCart Columns 3  Header    Price   dgShoppingCart Columns 3  Width   100  dgShoppingCart Columns 4  Visibility   Visibility Hidden     For me it works as a workaround because I needed to have the DataGrid resized when the user maximize the Window

[c#] How do I make XAML DataGridColumns fill the entire DataGrid?

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