How can I:
Here is the code:
<ListView Name="lstCustomers" ItemsSource="{Binding Path=Collection}">
<ListView.View>
<GridView>
<GridViewColumn Header="ID" DisplayMemberBinding="{Binding Id}" Width="40"/>
<GridViewColumn Header="First Name" DisplayMemberBinding="{Binding FirstName}" Width="100" />
<GridViewColumn Header="Last Name" DisplayMemberBinding="{Binding LastName}"/>
</GridView>
</ListView.View>
</ListView>
Thanks Kjetil, the GridViewColumn.CellTemplate works well and the Auto Width works of course but when the ObservativeCollection "Collection" is updated with longer-than-column-width data, the column sizes do not update themselves so that is only a solution for the initial display of data:
<ListView Name="lstCustomers" ItemsSource="{Binding Path=Collection}">
<ListView.View>
<GridView>
<GridViewColumn Header="ID" Width="Auto">
<GridViewColumn.CellTemplate>
<DataTemplate>
<TextBlock Text="{Binding Id}" TextAlignment="Right" Width="40"/>
</DataTemplate>
</GridViewColumn.CellTemplate>
</GridViewColumn>
<GridViewColumn Header="First Name" DisplayMemberBinding="{Binding FirstName}" Width="Auto" />
<GridViewColumn Header="Last Name" DisplayMemberBinding="{Binding LastName}" Width="Auto"/>
</GridView>
</ListView.View>
</ListView>
This question is related to
wpf
xaml
listview
gridview
gridviewcolumn
To make each of the columns autosize you can set Width="Auto" on the GridViewColumn.
To right-align the text in the ID column you can create a cell template using a TextBlock and set the TextAlignment. Then set the ListViewItem.HorizontalContentAlignment (using a style with a setter on the ListViewItem) to make the cell template fill the entire GridViewCell.
Maybe there is a simpler solution, but this should work.
Note: the solution requires both HorizontalContentAlignment=Stretch in Window.Resources and TextAlignment=Right in the CellTemplate.
<Window x:Class="WpfApplication6.Window1"
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
Title="Window1" Height="300" Width="300">
<Window.Resources>
<Style TargetType="ListViewItem">
<Setter Property="HorizontalContentAlignment" Value="Stretch" />
</Style>
</Window.Resources>
<Grid>
<ListView Name="lstCustomers" ItemsSource="{Binding Path=Collection}">
<ListView.View>
<GridView>
<GridViewColumn Header="ID" Width="40">
<GridViewColumn.CellTemplate>
<DataTemplate>
<TextBlock Text="{Binding Id}" TextAlignment="Right" />
</DataTemplate>
</GridViewColumn.CellTemplate>
</GridViewColumn>
<GridViewColumn Header="First Name" DisplayMemberBinding="{Binding FirstName}" Width="Auto" />
<GridViewColumn Header="Last Name" DisplayMemberBinding="{Binding LastName}" Width="Auto"/>
</GridView>
</ListView.View>
</ListView>
</Grid>
</Window>
I have created the following class and used across the application wherever required in place of GridView
:
/// <summary>
/// Represents a view mode that displays data items in columns for a System.Windows.Controls.ListView control with auto sized columns based on the column content
/// </summary>
public class AutoSizedGridView : GridView
{
protected override void PrepareItem(ListViewItem item)
{
foreach (GridViewColumn column in Columns)
{
// Setting NaN for the column width automatically determines the required
// width enough to hold the content completely.
// If the width is NaN, first set it to ActualWidth temporarily.
if (double.IsNaN(column.Width))
column.Width = column.ActualWidth;
// Finally, set the column with to NaN. This raises the property change
// event and re computes the width.
column.Width = double.NaN;
}
base.PrepareItem(item);
}
}
I liked user1333423's solution except that it always re-sized every column; i needed to allow some columns to be fixed width. So in this version columns with a width set to "Auto" will be auto-sized and those set to a fixed amount will not be auto-sized.
public class AutoSizedGridView : GridView
{
HashSet<int> _autoWidthColumns;
protected override void PrepareItem(ListViewItem item)
{
if (_autoWidthColumns == null)
{
_autoWidthColumns = new HashSet<int>();
foreach (var column in Columns)
{
if(double.IsNaN(column.Width))
_autoWidthColumns.Add(column.GetHashCode());
}
}
foreach (GridViewColumn column in Columns)
{
if (_autoWidthColumns.Contains(column.GetHashCode()))
{
if (double.IsNaN(column.Width))
column.Width = column.ActualWidth;
column.Width = double.NaN;
}
}
base.PrepareItem(item);
}
}
Since I had an ItemContainerStyle I had to put the HorizontalContentAlignment in the ItemContainerStyle
<ListView.ItemContainerStyle>
<Style TargetType="ListViewItem">
<Style.Triggers>
<DataTrigger Binding="{Binding Path=FieldDef.DispDetail, Mode=OneWay}" Value="False">
<Setter Property="Visibility" Value="Collapsed"/>
</DataTrigger>
</Style.Triggers>
<Setter Property="HorizontalContentAlignment" Value="Stretch" />
....
If the width of the contents changes, you'll have to use this bit of code to update each column:
private void ResizeGridViewColumn(GridViewColumn column)
{
if (double.IsNaN(column.Width))
{
column.Width = column.ActualWidth;
}
column.Width = double.NaN;
}
You'd have to fire it each time the data for that column updates.
If your listview is also re-sizing then you can use a behavior pattern to re-size the columns to fit the full ListView width. Almost the same as you using grid.column definitions
<ListView HorizontalAlignment="Stretch"
Behaviours:GridViewColumnResize.Enabled="True">
<ListViewItem></ListViewItem>
<ListView.View>
<GridView>
<GridViewColumn Header="Column *"
Behaviours:GridViewColumnResize.Width="*" >
<GridViewColumn.CellTemplate>
<DataTemplate>
<TextBox HorizontalAlignment="Stretch" Text="Example1" />
</DataTemplate>
</GridViewColumn.CellTemplate>
See the following link for some examples and link to source code http://lazycowprojects.tumblr.com/post/7063214400/wpf-c-listview-column-width-auto
I know that this is too late but here is my approach:
<GridViewColumn x:Name="GridHeaderLocalSize" Width="100">
<GridViewColumn.Header>
<GridViewColumnHeader HorizontalContentAlignment="Right">
<Grid Width="Auto" HorizontalAlignment="Right">
<Grid.ColumnDefinitions>
<ColumnDefinition Width="100"/>
</Grid.ColumnDefinitions>
<TextBlock Grid.Column="0" Text="Local size" TextAlignment="Right" Padding="0,0,5,0"/>
</Grid>
</GridViewColumnHeader>
</GridViewColumn.Header>
<GridViewColumn.CellTemplate>
<DataTemplate>
<TextBlock Width="{Binding ElementName=GridHeaderLocalSize, Path=Width, FallbackValue=100}" HorizontalAlignment="Right" TextAlignment="Right" Padding="0,0,5,0" Text="Text" >
</TextBlock>
</DataTemplate>
</GridViewColumn.CellTemplate>
The main idea is to bind the width of the cellTemplete element to the width of the ViewGridColumn. Width=100 is default width used until first resize. There isn't any code behind. Everything is in xaml.
This is your code
<ListView Name="lstCustomers" ItemsSource="{Binding Path=Collection}">
<ListView.View>
<GridView>
<GridViewColumn Header="ID" DisplayMemberBinding="{Binding Id}" Width="40"/>
<GridViewColumn Header="First Name" DisplayMemberBinding="{Binding FirstName}" Width="100" />
<GridViewColumn Header="Last Name" DisplayMemberBinding="{Binding LastName}"/>
</GridView>
</ListView.View>
</ListView>
Try this
<ListView Name="lstCustomers" ItemsSource="{Binding Path=Collection}">
<ListView.View>
<GridView>
<GridViewColumn DisplayMemberBinding="{Binding Id}" Width="Auto">
<GridViewColumnHeader Content="ID" Width="Auto" />
</GridViewColumn>
<GridViewColumn DisplayMemberBinding="{Binding FirstName}" Width="Auto">
<GridViewColumnHeader Content="First Name" Width="Auto" />
</GridViewColumn>
<GridViewColumn DisplayMemberBinding="{Binding LastName}" Width="Auto">
<GridViewColumnHeader Content="Last Name" Width="Auto" />
</GridViewColumn
</GridView>
</ListView.View>
</ListView>
I created a function for updating GridView column headers for a list and call it whenever the window is re-sized or the listview updates it's layout.
public void correctColumnWidths()
{
double remainingSpace = myList.ActualWidth;
if (remainingSpace > 0)
{
for (int i = 0; i < (myList.View as GridView).Columns.Count; i++)
if (i != 2)
remainingSpace -= (myList.View as GridView).Columns[i].ActualWidth;
//Leave 15 px free for scrollbar
remainingSpace -= 15;
(myList.View as GridView).Columns[2].Width = remainingSpace;
}
}
I had trouble with the accepted answer (because I missed the HorizontalAlignment=Stretch portion and have adjusted the original answer).
This is another technique. It uses a Grid with a SharedSizeGroup.
Note: the Grid.IsSharedScope=true on the ListView.
<Window x:Class="WpfApplication6.Window1"
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
Title="Window1" Height="300" Width="300">
<Grid>
<ListView Name="lstCustomers" ItemsSource="{Binding Path=Collection}" Grid.IsSharedSizeScope="True">
<ListView.View>
<GridView>
<GridViewColumn Header="ID" Width="40">
<GridViewColumn.CellTemplate>
<DataTemplate>
<Grid>
<Grid.ColumnDefinitions>
<ColumnDefinition Width="Auto" SharedSizeGroup="IdColumn"/>
</Grid.ColumnDefinitions>
<TextBlock HorizontalAlignment="Right" Text={Binding Path=Id}"/>
</Grid>
</DataTemplate>
</GridViewColumn.CellTemplate>
</GridViewColumn>
<GridViewColumn Header="First Name" DisplayMemberBinding="{Binding FirstName}" Width="Auto" />
<GridViewColumn Header="Last Name" DisplayMemberBinding="{Binding LastName}" Width="Auto"/>
</GridView>
</ListView.View>
</ListView>
</Grid>
</Window>
Source: Stackoverflow.com