ColumnDefinition Class

Defines column-specific properties that apply to Grid objects.

System.Object
  System.Windows.DependencyObject
    System.Windows.Controls.ColumnDefinition

Namespace:  System.Windows.Controls
Assembly:  System.Windows (in System.Windows.dll)

'Declaration
Public NotInheritable Class ColumnDefinition _
	Inherits DependencyObject
<ColumnDefinition .../>

The ColumnDefinition type exposes the following members.

  NameDescription
Public methodSupported by Silverlight for Windows PhoneColumnDefinitionInitializes a new instance of the ColumnDefinition class.
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  NameDescription
Public propertySupported by Silverlight for Windows PhoneActualWidthGets a value that represents the actual calculated width of a ColumnDefinition.
Public propertySupported by Silverlight for Windows PhoneDispatcherGets the Dispatcher this object is associated with. (Inherited from DependencyObject.)
Public propertySupported by Silverlight for Windows PhoneMaxWidthGets or sets a value that represents the maximum width of a ColumnDefinition.
Public propertySupported by Silverlight for Windows PhoneMinWidthGets or sets a value that represents the minimum width of a ColumnDefinition.
Public propertySupported by Silverlight for Windows PhoneWidthGets the calculated width of a ColumnDefinition element, or sets the GridLength value of a column that is defined by the ColumnDefinition.
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  NameDescription
Public methodSupported by Silverlight for Windows PhoneCheckAccessDetermines whether the calling thread has access to this object. (Inherited from DependencyObject.)
Public methodSupported by Silverlight for Windows PhoneClearValueClears the local value of a dependency property. (Inherited from DependencyObject.)
Public methodSupported by Silverlight for Windows PhoneEquals(Object)Determines whether the specified Object is equal to the current Object. (Inherited from Object.)
Protected methodSupported by Silverlight for Windows PhoneFinalizeAllows an object to try to free resources and perform other cleanup operations before the Object is reclaimed by garbage collection. (Inherited from Object.)
Public methodSupported by Silverlight for Windows PhoneGetAnimationBaseValueReturns any base value established for a Silverlight dependency property, which would apply in cases where an animation is not active. (Inherited from DependencyObject.)
Public methodSupported by Silverlight for Windows PhoneGetHashCodeServes as a hash function for a particular type. (Inherited from Object.)
Public methodSupported by Silverlight for Windows PhoneGetTypeGets the Type of the current instance. (Inherited from Object.)
Public methodSupported by Silverlight for Windows PhoneGetValueReturns the current effective value of a dependency property from a DependencyObject. (Inherited from DependencyObject.)
Protected methodSupported by Silverlight for Windows PhoneMemberwiseCloneCreates a shallow copy of the current Object. (Inherited from Object.)
Public methodSupported by Silverlight for Windows PhoneReadLocalValueReturns the local value of a dependency property, if a local value is set. (Inherited from DependencyObject.)
Public methodSupported by Silverlight for Windows PhoneSetValueSets the local value of a dependency property on a DependencyObject. (Inherited from DependencyObject.)
Public methodSupported by Silverlight for Windows PhoneToStringReturns a string that represents the current object. (Inherited from Object.)
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  NameDescription
Public fieldStatic memberSupported by Silverlight for Windows PhoneMaxWidthPropertyIdentifies the MaxWidth dependency property.
Public fieldStatic memberSupported by Silverlight for Windows PhoneMinWidthPropertyIdentifies the MinWidth dependency property.
Public fieldStatic memberSupported by Silverlight for Windows PhoneWidthPropertyIdentifies the Width dependency property.
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You can set a ColumnDefinition for each column in a Grid. If you do not specify a ColumnDefinition, by default the Grid will contain a single column with star sized width.

To set a group of ColumnDefinition elements by using code, add the ColumnDefinition to a ColumnDefinitionCollection.

ColumnDefinition uses a GridLength structure to describe its width characteristics. GridLength allows a ColumnDefinition to support variable distribution of available space.

The following example uses three ColumnDefinitions and three RowDefinitions to create a grid that has nine cells, such as in a worksheet. Each cell contains a TextBlock element that represents data, and the top row contains a TextBlock with the ColumnSpan property applied. To show the boundaries of each cell, the ShowGridLines property is enabled.


<Grid Background="White" VerticalAlignment="Top" HorizontalAlignment="Left" ShowGridLines="True" Width="350" Height="200">
    <Grid.ColumnDefinitions>
        <ColumnDefinition />
        <ColumnDefinition />
        <ColumnDefinition />
    </Grid.ColumnDefinitions>
    <Grid.RowDefinitions>
        <RowDefinition />
        <RowDefinition />
        <RowDefinition />
        <RowDefinition />
    </Grid.RowDefinitions>

    <TextBlock HorizontalAlignment="Center" VerticalAlignment="Center" FontSize="20" FontWeight="Bold" Grid.ColumnSpan="3" Grid.Row="0">Expenses for 2007</TextBlock>
    <TextBlock HorizontalAlignment="Center" VerticalAlignment="Center" FontSize="15" FontWeight="Bold" Grid.Row="1" Grid.Column="0">Travel</TextBlock>
    <TextBlock HorizontalAlignment="Center" VerticalAlignment="Center" FontSize="15" FontWeight="Bold" Grid.Row="1" Grid.Column="1">Office Supplies</TextBlock>
    <TextBlock HorizontalAlignment="Center" VerticalAlignment="Center" FontSize="15" FontWeight="Bold" Grid.Row="1" Grid.Column="2">Salary</TextBlock>
    <TextBlock HorizontalAlignment="Center" VerticalAlignment="Center" Grid.Row="2" Grid.Column="0">20000</TextBlock>
    <TextBlock HorizontalAlignment="Center" VerticalAlignment="Center" Grid.Row="2" Grid.Column="1">10000</TextBlock>
    <TextBlock HorizontalAlignment="Center" VerticalAlignment="Center" Grid.Row="2" Grid.Column="2">50000</TextBlock>
    <TextBlock FontSize="16" FontWeight="Bold" Grid.ColumnSpan="3" Grid.Row="3">Total Expense: 80000</TextBlock>
</Grid>



Public Sub New()
    InitializeComponent()
    CreateGrid()
End Sub

Private Sub CreateGrid()
    ' Create the Grid 
    Dim myGrid As New Grid()
    myGrid.Width = 350
    myGrid.Height = 200
    myGrid.HorizontalAlignment = HorizontalAlignment.Left
    myGrid.VerticalAlignment = VerticalAlignment.Top
    myGrid.ShowGridLines = True
    Dim myBrush As New SolidColorBrush(Colors.White)
    myGrid.Background = myBrush

    ' Define the Columns 
    Dim colDef1 As New ColumnDefinition()
    Dim colDef2 As New ColumnDefinition()
    Dim colDef3 As New ColumnDefinition()
    myGrid.ColumnDefinitions.Add(colDef1)
    myGrid.ColumnDefinitions.Add(colDef2)
    myGrid.ColumnDefinitions.Add(colDef3)

    ' Define the Rows 
    Dim rowDef1 As New RowDefinition()
    Dim rowDef2 As New RowDefinition()
    Dim rowDef3 As New RowDefinition()
    Dim rowDef4 As New RowDefinition()
    myGrid.RowDefinitions.Add(rowDef1)
    myGrid.RowDefinitions.Add(rowDef2)
    myGrid.RowDefinitions.Add(rowDef3)
    myGrid.RowDefinitions.Add(rowDef4)

    ' Add the first text cell to the Grid 
    Dim txt1 As New TextBlock()
    txt1.Text = "Expenses for 2007"
    txt1.FontSize = 20
    txt1.FontWeight = FontWeights.Bold
    Grid.SetColumnSpan(txt1, 3)
    Grid.SetRow(txt1, 0)
    txt1.HorizontalAlignment = HorizontalAlignment.Center
    txt1.VerticalAlignment = VerticalAlignment.Center

    ' Add the second text cell to the Grid 
    Dim txt2 As New TextBlock()
    txt2.Text = "Travel"
    txt2.FontSize = 15
    txt2.FontWeight = FontWeights.Bold
    Grid.SetRow(txt2, 1)
    Grid.SetColumn(txt2, 0)
    txt2.HorizontalAlignment = HorizontalAlignment.Center
    txt2.VerticalAlignment = VerticalAlignment.Center

    ' Add the third text cell to the Grid 
    Dim txt3 As New TextBlock()
    txt3.Text = "Office Supplies"
    txt3.FontSize = 15
    txt3.FontWeight = FontWeights.Bold
    Grid.SetRow(txt3, 1)
    Grid.SetColumn(txt3, 1)
    txt3.HorizontalAlignment = HorizontalAlignment.Center
    txt3.VerticalAlignment = VerticalAlignment.Center

    ' Add the fourth text cell to the Grid 
    Dim txt4 As New TextBlock()
    txt4.Text = "Salary"
    txt4.FontSize = 15
    txt4.FontWeight = FontWeights.Bold
    Grid.SetRow(txt4, 1)
    Grid.SetColumn(txt4, 2)
    txt4.HorizontalAlignment = HorizontalAlignment.Center
    txt4.VerticalAlignment = VerticalAlignment.Center

    ' Add the sixth text cell to the Grid 
    Dim txt5 As New TextBlock()
    Dim db1 As New Double()
    db1 = 20000
    txt5.Text = db1.ToString()
    Grid.SetRow(txt5, 2)
    Grid.SetColumn(txt5, 0)
    txt5.HorizontalAlignment = HorizontalAlignment.Center
    txt5.VerticalAlignment = VerticalAlignment.Center

    ' Add the seventh text cell to the Grid 
    Dim txt6 As New TextBlock()
    Dim db2 As New Double()
    db2 = 10000
    txt6.Text = db2.ToString()
    Grid.SetRow(txt6, 2)
    Grid.SetColumn(txt6, 1)
    txt6.HorizontalAlignment = HorizontalAlignment.Center
    txt6.VerticalAlignment = VerticalAlignment.Center

    ' Add the final text cell to the Grid 
    Dim txt7 As New TextBlock()
    Dim db3 As New Double()
    db3 = 50000
    txt7.Text = db3.ToString()
    Grid.SetRow(txt7, 2)
    Grid.SetColumn(txt7, 2)
    txt7.HorizontalAlignment = HorizontalAlignment.Center
    txt7.VerticalAlignment = VerticalAlignment.Center

    ' Total all Data and Span Three Columns 
    Dim txt8 As New TextBlock()
    txt8.FontSize = 16
    txt8.FontWeight = FontWeights.Bold
    txt8.Text = "Total Units: " + (db1 + db2 + db3).ToString()
    Grid.SetRow(txt8, 3)
    Grid.SetColumnSpan(txt8, 3)

    ' Add the TextBlock elements to the Grid Children collection 
    myGrid.Children.Add(txt1)
    myGrid.Children.Add(txt2)
    myGrid.Children.Add(txt3)
    myGrid.Children.Add(txt4)
    myGrid.Children.Add(txt5)
    myGrid.Children.Add(txt6)
    myGrid.Children.Add(txt7)
    myGrid.Children.Add(txt8)

    LayoutRoot.Children.Add(myGrid)

End Sub


Silverlight

Supported in: 5, 4, 3

Silverlight for Windows Phone

Supported in: Windows Phone OS 7.1, Windows Phone OS 7.0

For a list of the operating systems and browsers that are supported by Silverlight, see Supported Operating Systems and Browsers.

Any public static (Shared in Visual Basic) members of this type are thread safe. Any instance members are not guaranteed to be thread safe.

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