DataRowView

DataRowView

System.Data (system.data.dll) class

It represents a customized view of a DataRow that is shown in a control when using data binding. For example, if you bind a DataTable to a System.Windows.Forms.DataGrid control, .NET displays the data using the table's default DataView , which contains one DataRowView instance for every DataRow that should be displayed. Unlike a DataRow , the DataRowView can display only one version of the underlying data. This version is determined by the RowVersion property, which is modified automatically during an editing operation to show the proposed value instead of the current value.

You can access the DataRow instance that corresponds to a DataRowView through the Row property. Many DataRowView methods and properties are similar to those of the DataRow . For example, you can programmatically place multiple rows into edit mode using BeginEdit( ) , finish the operation with EndEdit( ) or CancelEdit( ) , or delete a row with Delete( ) . You can also retrieve field values using the column name or the indexer of the DataRowView class. Two read-only properties can be used to determine if a DataRowView is being edited ( IsEdit ) or is newly added ( IsNew ).

 public class  DataRowView  : System.ComponentModel.ICustomTypeDescriptor, System.ComponentModel.IEditableObject,  System.ComponentModel.IDataErrorInfo {  // Public Instance Properties  public DataView  DataView  {get; }     public bool  IsEdit  {get; }     public bool  IsNew  {get; }     public DataRow  Row  {get; }     public DataRowVersion  RowVersion  {get; }     public object  this[int    ndx    ]  {set; get; }     public object  this[string    property    ]  {set; get; }  // Public Instance Methods  public void  BeginEdit  (  );  // implements System.ComponentModel.IEditableObject  public void  CancelEdit  (  );  // implements System.ComponentModel.IEditableObject  public DataView  CreateChildView  ( DataRelation   relation   );      public DataView  CreateChildView  ( string   relationName   );      public void  Delete  (  );      public void  EndEdit  (  );  // implements System.ComponentModel.IEditableObject  public override bool  Equals  ( object   other   );  // overrides object  public override int  GetHashCode  (  );  // overrides object  } 

Returned By

DataView.{AddNew( ) , FindRows( ) , this}



ADO. NET in a Nutshell
ADO.NET in a Nutshell
ISBN: 0596003617
EAN: 2147483647
Year: 2005
Pages: 415

Similar book on Amazon

flylib.com © 2008-2017.
If you may any questions please contact us: flylib@qtcs.net