DataGridTableStyle Class

Reference

Definition

Namespace:: System.Windows.Forms

Assembly:: System.Windows.Forms.dll

Important

Some information relates to prerelease product that may be substantially modified before it’s released. Microsoft makes no warranties, express or implied, with respect to the information provided here.

Represents the table drawn by the DataGrid control at run time.

public ref class DataGridTableStyle : System::ComponentModel::Component, System::Windows::Forms::IDataGridEditingService

public class DataGridTableStyle : System.ComponentModel.Component, System.Windows.Forms.IDataGridEditingService

type DataGridTableStyle = class
    inherit Component
    interface IDataGridEditingService

Public Class DataGridTableStyle
Inherits Component
Implements IDataGridEditingService

Inheritance: Object

MarshalByRefObject

Component
DataGridTableStyle

Implements: IDataGridEditingService

Examples

The following code example creates two DataGridTableStyle instances and sets the MappingName of each object to the TableName of a DataTable in a DataSet. The example then adds DataGridColumnStyle objects to the GridColumnStylesCollection of each DataGridTableStyle. For an example that runs, see the System.Windows.Forms.DataGrid example.

void AddCustomDataTableStyle()
{
   
   /* Create a new DataGridTableStyle and set
         its MappingName to the TableName of a DataTable. */
   DataGridTableStyle^ ts1 = gcnew DataGridTableStyle;
   ts1->MappingName = "Customers";
   
   /* Add a GridColumnStyle and set its MappingName 
         to the name of a DataColumn in the DataTable. 
         Set the HeaderText and Width properties. */
   DataGridColumnStyle^ boolCol = gcnew DataGridBoolColumn;
   boolCol->MappingName = "Current";
   boolCol->HeaderText = "IsCurrent Customer";
   boolCol->Width = 150;
   ts1->GridColumnStyles->Add( boolCol );
   
   // Add a second column style.
   DataGridColumnStyle^ TextCol = gcnew DataGridTextBoxColumn;
   TextCol->MappingName = "custName";
   TextCol->HeaderText = "Customer Name";
   TextCol->Width = 250;
   ts1->GridColumnStyles->Add( TextCol );
   
   // Create the second table style with columns.
   DataGridTableStyle^ ts2 = gcnew DataGridTableStyle;
   ts2->MappingName = "Orders";
   
   // Change the colors.
   ts2->ForeColor = Color::Yellow;
   ts2->AlternatingBackColor = Color::Blue;
   ts2->BackColor = Color::Blue;
   
   // Create new DataGridColumnStyle objects.
   DataGridColumnStyle^ cOrderDate = gcnew DataGridTextBoxColumn;
   cOrderDate->MappingName = "OrderDate";
   cOrderDate->HeaderText = "Order Date";
   cOrderDate->Width = 100;
   ts2->GridColumnStyles->Add( cOrderDate );
   PropertyDescriptorCollection^ pcol = this->BindingContext[ myDataSet,"Customers.custToOrders" ]->GetItemProperties();
   DataGridColumnStyle^ csOrderAmount = gcnew DataGridTextBoxColumn( pcol[ "OrderAmount" ],"c",true );
   csOrderAmount->MappingName = "OrderAmount";
   csOrderAmount->HeaderText = "Total";
   csOrderAmount->Width = 100;
   ts2->GridColumnStyles->Add( csOrderAmount );
   
   // Add the DataGridTableStyle objects to the collection.
   myDataGrid->TableStyles->Add( ts1 );
   myDataGrid->TableStyles->Add( ts2 );
}

private void AddCustomDataTableStyle()
   {
      /* Create a new DataGridTableStyle and set
      its MappingName to the TableName of a DataTable. */
      DataGridTableStyle ts1 = new DataGridTableStyle();
      ts1.MappingName = "Customers";

      /* Add a GridColumnStyle and set its MappingName 
      to the name of a DataColumn in the DataTable. 
      Set the HeaderText and Width properties. */
      
      DataGridColumnStyle boolCol = new DataGridBoolColumn();
      boolCol.MappingName = "Current";
      boolCol.HeaderText = "IsCurrent Customer";
      boolCol.Width = 150;
      ts1.GridColumnStyles.Add(boolCol);
      
      // Add a second column style.
      DataGridColumnStyle TextCol = new DataGridTextBoxColumn();
      TextCol.MappingName = "custName";
      TextCol.HeaderText = "Customer Name";
      TextCol.Width = 250;
      ts1.GridColumnStyles.Add(TextCol);

      // Create the second table style with columns.
      DataGridTableStyle ts2 = new DataGridTableStyle();
      ts2.MappingName = "Orders";
      // Change the colors.
      ts2.ForeColor = Color.Yellow;
      ts2.AlternatingBackColor = Color.Blue;
      ts2.BackColor = Color.Blue;
      
      // Create new DataGridColumnStyle objects.
      DataGridColumnStyle cOrderDate = 
      new DataGridTextBoxColumn();
      cOrderDate.MappingName = "OrderDate";
      cOrderDate.HeaderText = "Order Date";
      cOrderDate.Width = 100;
      ts2.GridColumnStyles.Add(cOrderDate);

      PropertyDescriptorCollection pcol = this.BindingContext
      [myDataSet, "Customers.custToOrders"].GetItemProperties();
      
      DataGridColumnStyle csOrderAmount = 
      new DataGridTextBoxColumn(pcol["OrderAmount"], "c", true);
      csOrderAmount.MappingName = "OrderAmount";
      csOrderAmount.HeaderText = "Total";
      csOrderAmount.Width = 100;
      ts2.GridColumnStyles.Add(csOrderAmount);

      // Add the DataGridTableStyle objects to the collection.
      myDataGrid.TableStyles.Add(ts1);
      myDataGrid.TableStyles.Add(ts2);
   }

Private Sub AddCustomDataTableStyle()
    ' Create a new DataGridTableStyle and set
    ' its MappingName to the TableName of a DataTable. 
    Dim ts1 As New DataGridTableStyle()
    ts1.MappingName = "Customers"
    
    ' Add a GridColumnStyle and set its MappingName
    ' to the name of a DataColumn in the DataTable.
    ' Set the HeaderText and Width properties. 
    
    Dim boolCol As New DataGridBoolColumn()
    boolCol.MappingName = "Current"
    boolCol.HeaderText = "IsCurrent Customer"
    boolCol.Width = 150
    ts1.GridColumnStyles.Add(boolCol)
    
    ' Add a second column style.
    Dim TextCol As New DataGridTextBoxColumn()
    TextCol.MappingName = "custName"
    TextCol.HeaderText = "Customer Name"
    TextCol.Width = 250
    ts1.GridColumnStyles.Add(TextCol)

    ' Create the second table style with columns.
    Dim ts2 As New DataGridTableStyle()
    ts2.MappingName = "Orders"

    ' Change the colors.
    ts2.ForeColor = Color.Yellow
    ts2.AlternatingBackColor = Color.Blue
    ts2.BackColor = Color.Blue
    
    ' Create new DataGridColumnStyle objects.
    Dim cOrderDate As New DataGridTextBoxColumn()
    cOrderDate.MappingName = "OrderDate"
    cOrderDate.HeaderText = "Order Date"
    cOrderDate.Width = 100
    ts2.GridColumnStyles.Add(cOrderDate)
    
    Dim pcol As PropertyDescriptorCollection = Me.BindingContext(myDataSet, "Customers.custToOrders").GetItemProperties()
    
    Dim csOrderAmount As New DataGridTextBoxColumn(pcol("OrderAmount"), "c", True)
    csOrderAmount.MappingName = "OrderAmount"
    csOrderAmount.HeaderText = "Total"
    csOrderAmount.Width = 100
    ts2.GridColumnStyles.Add(csOrderAmount)

    ' Add the DataGridTableStyle objects to the collection.
    myDataGrid.TableStyles.Add(ts1)
    myDataGrid.TableStyles.Add(ts2)
End Sub

Remarks

The System.Windows.Forms.DataGrid control displays data in the form of a grid. The DataGridTableStyle is a class that represents the drawn grid only. This grid should not be confused with the DataTable class, which is a possible source of data for the grid. Instead, the DataGridTableStyle strictly represents the grid as it is painted in the control. Therefore, through the DataGridTableStyle you can control the appearance of the grid for each DataTable. To specify which DataGridTableStyle is used when displaying data from a particular DataTable, set the MappingName to the TableName of a DataTable.

The GridTableStylesCollection retrieved through the TableStyles property contains all the DataGridTableStyle objects used by a System.Windows.Forms.DataGrid control. The collection can contain as many DataGridTableStyle objects as you need, however the MappingName of each must be unique. At run time, this allows you to substitute a different DataGridTableStyle for the same data, depending on the user's preference. To do this:

Populate the GridTableStylesCollection with DataGridTableStyle objects. If a DataGridTableStyle exists in the GridTableStylesCollection whose MappingName property value equals the DataTable object's TableName property, the DataTable is displayed with this DataGridTableStyle. If no DataGridTableStyle exists with a matching MappingName, the DataTable is displayed with the default style for data grid tables.
When a different grid style is needed, use the Item property to select the appropriate DataGridTableStyle (pass the TableName to the Item[] property) and set the MappingName of the returned object to a new value.
Use the Item[] property to select the desired DataGridTableStyle, and set its MappingName to the TableName of the DataTable.

Caution

Always create DataGridColumnStyle objects and add them to the GridColumnStylesCollection before adding DataGridTableStyle objects to the GridTableStylesCollection. When you add an empty DataGridTableStyle with a valid MappingName value to the collection, DataGridColumnStyle objects are automatically generated for you. Consequently, an exception will be thrown if you try to add new DataGridColumnStyle objects with duplicate MappingName values to the GridColumnStylesCollection.

To determine which DataGridTableStyle is currently displayed, use the DataSource and DataMember properties of the System.Windows.Forms.DataGrid to return a CurrencyManager. If the data source implements the ITypedList interface, you can use the GetListName method to return the MappingName of the current table. This is shown in the C# code below:

private void PrintCurrentListName(DataGrid myDataGrid){  
 CurrencyManager myCM = (CurrencyManager)  
 BindingContext[myDataGrid.DataSource, myDataGrid.DataMember];  
 IList myList = myCM.List;  
 ITypedList thisList = (ITypedList) myList;  
 Console.WriteLine(thisList.GetListName(null));  
}

If the DataSet contains DataTable objects related through DataRelation objects, and the currently displayed DataTable is a child table, the DataMember will return a string in the form of TableName.RelationName (in the simplest case). If the DataTable is further down in the hierarchy, the string will consist of the parent table's name followed by the necessary RelationName values required to reach the table's level. For example, imagine three DataTable objects in a hierarchical relationship named (top to bottom) Regions, Customers, and Orders, and two DataRelation objects named RegionsToCustomers and CustomersToOrders, the DataMember property will return "Regions.RegionsToCustomers.CustomersToOrders". However, the MappingName will then be "Orders".

The collection of DataGridTableStyle objects is returned through the TableStyles property of the System.Windows.Forms.DataGrid.

When a DataGridTableStyle is displayed, the settings for the DataGridTableStyle will override the settings for the System.Windows.Forms.DataGrid control. If a value is not set for a particular DataGridTableStyle property, the System.Windows.Forms.DataGrid control's value will be used instead. The following list shows the DataGridColumnStyle properties that can be set to override System.Windows.Forms.DataGrid control properties:

To bind the DataGrid to a strongly typed array of objects, the object type must contain public properties. To create a DataGridTableStyle that displays the array, set the DataGridTableStyle.MappingName property to typename where typename is replaced by the name of the object type. Also note that the MappingName property is case-sensitive; the type name must be matched exactly. See the MappingName property for an example.

You can also bind the DataGrid to an ArrayList. A feature of the ArrayList is that it can contain objects of multiple types, but the DataGrid can only bind to such a list when all items in the list are of the same type as the first item. This means that all objects must either be of the same type, or they must inherit from the same class as the first item in the list. For example, if the first item in a list is a Control, the second item could be a TextBox (which inherits from Control). If, on the other hand, the first item is a TextBox, the second object cannot be a Control. Further, the ArrayList must have items in it when it is bound and the objects in the DataGridTableStyle must contain public properties. An empty ArrayList will result in an empty grid. When binding to an ArrayList, set the MappingName of the DataGridTableStyle to "ArrayList" (the type name).

Constructors

DataGridTableStyle()	Initializes a new instance of the DataGridTableStyle class.
DataGridTableStyle(Boolean)	Initializes a new instance of the DataGridTableStyle class using the specified value to determine whether the grid table is the default style.
DataGridTableStyle(CurrencyManager)	Initializes a new instance of the DataGridTableStyle class with the specified CurrencyManager.

Fields

DefaultTableStyle

Gets the default table style.

Properties

AllowSorting	Indicates whether sorting is allowed on the grid table when this DataGridTableStyle is used.
AlternatingBackColor	Gets or sets the background color of odd-numbered rows of the grid.
BackColor	Gets or sets the background color of even-numbered rows of the grid.
CanRaiseEvents	Gets a value indicating whether the component can raise an event. (Inherited from Component)
ColumnHeadersVisible	Gets or sets a value indicating whether column headers are visible.
Container	Gets the IContainer that contains the Component. (Inherited from Component)
DataGrid	Gets or sets the DataGrid control for the drawn table.
DesignMode	Gets a value that indicates whether the Component is currently in design mode. (Inherited from Component)
Events	Gets the list of event handlers that are attached to this Component. (Inherited from Component)
ForeColor	Gets or sets the foreground color of the grid table.
GridColumnStyles	Gets the collection of columns drawn for this table.
GridLineColor	Gets or sets the color of grid lines.
GridLineStyle	Gets or sets the style of grid lines.
HeaderBackColor	Gets or sets the background color of headers.
HeaderFont	Gets or sets the font used for header captions.
HeaderForeColor	Gets or sets the foreground color of headers.
LinkColor	Gets or sets the color of link text.
LinkHoverColor	Gets or sets the color displayed when hovering over link text.
MappingName	Gets or sets the name used to map this table to a specific data source.
PreferredColumnWidth	Gets or sets the width used to create columns when a new grid is displayed.
PreferredRowHeight	Gets or sets the height used to create a row when a new grid is displayed.
ReadOnly	Gets or sets a value indicating whether columns can be edited.
RowHeadersVisible	Gets or sets a value indicating whether row headers are visible.
RowHeaderWidth	Gets or sets the width of row headers.
SelectionBackColor	Gets or sets the background color of selected cells.
SelectionForeColor	Gets or sets the foreground color of selected cells.
Site	Gets or sets the ISite of the Component. (Inherited from Component)

Methods

BeginEdit(DataGridColumnStyle, Int32)	Requests an edit operation.
CreateGridColumn(PropertyDescriptor, Boolean)	Creates a DataGridColumnStyle using the specified property descriptor. Specifies whether the DataGridColumnStyle is a default column style.
CreateGridColumn(PropertyDescriptor)	Creates a DataGridColumnStyle, using the specified property descriptor.
CreateObjRef(Type)	Creates an object that contains all the relevant information required to generate a proxy used to communicate with a remote object. (Inherited from MarshalByRefObject)
Dispose()	Releases all resources used by the Component. (Inherited from Component)
Dispose(Boolean)	Disposes of the resources (other than memory) used by the DataGridTableStyle.
EndEdit(DataGridColumnStyle, Int32, Boolean)	Requests an end to an edit operation.
Equals(Object)	Determines whether the specified object is equal to the current object. (Inherited from Object)
GetHashCode()	Serves as the default hash function. (Inherited from Object)
GetLifetimeService()	Obsolete. Retrieves the current lifetime service object that controls the lifetime policy for this instance. (Inherited from MarshalByRefObject)
GetService(Type)	Returns an object that represents a service provided by the Component or by its Container. (Inherited from Component)
GetType()	Gets the Type of the current instance. (Inherited from Object)
InitializeLifetimeService()	Obsolete. Obtains a lifetime service object to control the lifetime policy for this instance. (Inherited from MarshalByRefObject)
MemberwiseClone()	Creates a shallow copy of the current Object. (Inherited from Object)
MemberwiseClone(Boolean)	Creates a shallow copy of the current MarshalByRefObject object. (Inherited from MarshalByRefObject)
OnAllowSortingChanged(EventArgs)	Raises the AllowSortingChanged event.
OnAlternatingBackColorChanged(EventArgs)	Raises the AlternatingBackColorChanged event.
OnBackColorChanged(EventArgs)	Raises the BackColorChanged event.
OnColumnHeadersVisibleChanged(EventArgs)	Raises the ColumnHeadersVisibleChanged event.
OnForeColorChanged(EventArgs)	Raises the ForeColorChanged event.
OnGridLineColorChanged(EventArgs)	Raises the GridLineColorChanged event.
OnGridLineStyleChanged(EventArgs)	Raises the GridLineStyleChanged event.
OnHeaderBackColorChanged(EventArgs)	Raises the HeaderBackColorChanged event.
OnHeaderFontChanged(EventArgs)	Raises the HeaderFontChanged event.
OnHeaderForeColorChanged(EventArgs)	Raises the HeaderForeColorChanged event.
OnLinkColorChanged(EventArgs)	Raises the LinkColorChanged event.
OnLinkHoverColorChanged(EventArgs)	Raises the `LinkHoverColorChanged` event.
OnMappingNameChanged(EventArgs)	Raises the MappingNameChanged event.
OnPreferredColumnWidthChanged(EventArgs)	Raises the PreferredColumnWidthChanged event.
OnPreferredRowHeightChanged(EventArgs)	Raises the PreferredRowHeightChanged event.
OnReadOnlyChanged(EventArgs)	Raises the ReadOnlyChanged event.
OnRowHeadersVisibleChanged(EventArgs)	Raises the RowHeadersVisibleChanged event.
OnRowHeaderWidthChanged(EventArgs)	Raises the RowHeaderWidthChanged event.
OnSelectionBackColorChanged(EventArgs)	Raises the SelectionBackColorChanged event.
OnSelectionForeColorChanged(EventArgs)	Raises the SelectionForeColorChanged event.
ResetAlternatingBackColor()	Resets the AlternatingBackColor property to its default value.
ResetBackColor()	Resets the BackColor property to its default value.
ResetForeColor()	Resets the ForeColor property to its default value.
ResetGridLineColor()	Resets the GridLineColor property to its default value.
ResetHeaderBackColor()	Resets the HeaderBackColor property to its default value.
ResetHeaderFont()	Resets the HeaderFont property to its default value.
ResetHeaderForeColor()	Resets the HeaderForeColor property to its default value.
ResetLinkColor()	Resets the LinkColor property to its default value.
ResetLinkHoverColor()	Resets the LinkHoverColor property to its default value.
ResetSelectionBackColor()	Resets the SelectionBackColor property to its default value.
ResetSelectionForeColor()	Resets the SelectionForeColor property to its default value.
ShouldSerializeAlternatingBackColor()	Indicates whether the AlternatingBackColor property should be persisted.
ShouldSerializeBackColor()	Indicates whether the BackColor property should be persisted.
ShouldSerializeForeColor()	Indicates whether the ForeColor property should be persisted.
ShouldSerializeGridLineColor()	Indicates whether the GridLineColor property should be persisted.
ShouldSerializeHeaderBackColor()	Indicates whether the HeaderBackColor property should be persisted.
ShouldSerializeHeaderForeColor()	Indicates whether the HeaderForeColor property should be persisted.
ShouldSerializeLinkColor()	Indicates whether the LinkColor property should be persisted.
ShouldSerializeLinkHoverColor()	Indicates whether the LinkHoverColor property should be persisted.
ShouldSerializePreferredRowHeight()	Indicates whether the PreferredRowHeight property should be persisted.
ShouldSerializeSelectionBackColor()	Indicates whether the SelectionBackColor property should be persisted.
ShouldSerializeSelectionForeColor()	Indicates whether the SelectionForeColor property should be persisted.
ToString()	Returns a String containing the name of the Component, if any. This method should not be overridden. (Inherited from Component)

Events

AllowSortingChanged	Occurs when the AllowSorting property value changes.
AlternatingBackColorChanged	Occurs when the AlternatingBackColor value changes.
BackColorChanged	Occurs when the BackColor value changes.
ColumnHeadersVisibleChanged	Occurs when the ColumnHeadersVisible value changes.
Disposed	Occurs when the component is disposed by a call to the Dispose() method. (Inherited from Component)
ForeColorChanged	Occurs when the ForeColor value changes.
GridLineColorChanged	Occurs when the GridLineColor value changes.
GridLineStyleChanged	Occurs when the GridLineStyle value changes.
HeaderBackColorChanged	Occurs when the HeaderBackColor value changes.
HeaderFontChanged	Occurs when the HeaderFont value changes.
HeaderForeColorChanged	Occurs when the HeaderForeColor value changes.
LinkColorChanged	Occurs when the LinkColor value changes.
LinkHoverColorChanged	Occurs when the LinkHoverColor value changes.
MappingNameChanged	Occurs when the MappingName value changes.
PreferredColumnWidthChanged	Occurs when the PreferredColumnWidth property value changes.
PreferredRowHeightChanged	Occurs when the PreferredRowHeight value changes.
ReadOnlyChanged	Occurs when the ReadOnly value changes.
RowHeadersVisibleChanged	Occurs when the RowHeadersVisible value changes.
RowHeaderWidthChanged	Occurs when the RowHeaderWidth value changes.
SelectionBackColorChanged	Occurs when the SelectionBackColor value changes.
SelectionForeColorChanged	Occurs when the SelectionForeColor value changes.

Applies to

Поділитися через