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DataViewRowState Enumeration

Describes the version of data in a DataRow.

This enumeration has a FlagsAttribute attribute that allows a bitwise combination of its member values.

Namespace:  System.Data
Assembly:  System.Data (in System.Data.dll)
[FlagsAttribute]
public enum DataViewRowState
Member nameDescription
Supported by the .NET Compact FrameworkSupported by the XNA FrameworkNoneNone.
Supported by the .NET Compact FrameworkSupported by the XNA FrameworkUnchangedAn unchanged row.
Supported by the .NET Compact FrameworkSupported by the XNA FrameworkAddedA new row.
Supported by the .NET Compact FrameworkSupported by the XNA FrameworkDeletedA deleted row.
Supported by the .NET Compact FrameworkSupported by the XNA FrameworkModifiedCurrentA current version of original data that has been modified (see ModifiedOriginal).
Supported by the .NET Compact FrameworkSupported by the XNA FrameworkModifiedOriginalThe original version of the data that was modified. (Although the data has since been modified, it is available as ModifiedCurrent).
Supported by the .NET Compact FrameworkSupported by the XNA FrameworkOriginalRowsOriginal rows including unchanged and deleted rows.
Supported by the .NET Compact FrameworkSupported by the XNA FrameworkCurrentRowsCurrent rows including unchanged, new, and modified rows.

The DataViewRowState values are used either to retrieve a particular version of data from a DataRow, or to determine what versions exist.

Set the RowStateFilter property of the DataView to specify which version or versions of data you want to view.

You can use the Boolean operator Or with the values to get more than one version.

The DataTable uses DataViewRowState in the Select method.

In the following example DataTable is created with a single column. The data is changed, and the RowStateFilter of the DataView is set to display different row sets, depending on the DataViewRowState.

static private void DemonstrateRowState()
{
    // Create a DataTable with one column.
    DataTable dataTable = new DataTable("dataTable");
    DataColumn dataColumn = new DataColumn("dataColumn");
    dataTable.Columns.Add(dataColumn);

    // Add ten rows.
    DataRow dataRow;
    for (int i = 0; i < 10; i++)
    {
        dataRow = dataTable.NewRow();
        dataRow["dataColumn"] = "item " + i;
        dataTable.Rows.Add(dataRow);
    }
    dataTable.AcceptChanges();

    // Create a DataView with the table.
    DataView dataView = new DataView(dataTable);

    // Change one row's value:
    dataTable.Rows[1]["dataColumn"] = "Hello";

    // Add one row:
    dataRow = dataTable.NewRow();
    dataRow["dataColumn"] = "World";
    dataTable.Rows.Add(dataRow);

    // Set the RowStateFilter to display only added and modified rows.
    dataView.RowStateFilter = DataViewRowState.Added
        | DataViewRowState.ModifiedCurrent;

    // Print those rows. Output = "Hello" "World";
    PrintView(dataView, "ModifiedCurrent and Added");

    // Set filter to display on originals of modified rows.
    dataView.RowStateFilter = DataViewRowState.ModifiedOriginal;
    PrintView(dataView, "ModifiedOriginal");

    // Delete three rows.
    dataTable.Rows[1].Delete();
    dataTable.Rows[2].Delete();
    dataTable.Rows[3].Delete();

    // Set the RowStateFilter to display only Added and modified rows.
    dataView.RowStateFilter = DataViewRowState.Deleted;
    PrintView(dataView, "Deleted");

    //Set filter to display only current.
    dataView.RowStateFilter = DataViewRowState.CurrentRows;
    PrintView(dataView, "Current");

    // Set filter to display only unchanged rows.
    dataView.RowStateFilter = DataViewRowState.Unchanged;
    PrintView(dataView, "Unchanged");

    // Set filter to display only original rows.
    dataView.RowStateFilter = DataViewRowState.OriginalRows;
    PrintView(dataView, "OriginalRows");
}


static private void PrintView(DataView dataView, string label)
{
    Console.WriteLine("\n" + label);
    for (int i = 0; i < dataView.Count; i++)
    {
        Console.WriteLine(dataView[i]["dataColumn"]);
    }
}

Windows 7, Windows Vista, Windows XP SP2, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP Starter Edition, Windows Server 2008 R2, Windows Server 2008, Windows Server 2003, Windows Server 2000 SP4, Windows Millennium Edition, Windows 98, Windows CE, Windows Mobile for Smartphone, Windows Mobile for Pocket PC, Xbox 360, Zune

The .NET Framework and .NET Compact Framework do not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.

.NET Framework

Supported in: 3.5, 3.0, 2.0, 1.1, 1.0

.NET Compact Framework

Supported in: 3.5, 2.0, 1.0

XNA Framework

Supported in: 3.0, 2.0, 1.0
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