SqlCeParameter.SourceVersion Property

Gets or sets the DataRowVersion to use when loading Value.

Namespace: System.Data.SqlServerCe
Assembly: System.Data.SqlServerCe (in system.data.sqlserverce.dll)

Syntax

'Declaration
Public Overrides Property SourceVersion As DataRowVersion
'Usage
Dim instance As SqlCeParameter
Dim value As DataRowVersion

value = instance.SourceVersion

instance.SourceVersion = value

public override DataRowVersion SourceVersion { get; set; 

public:
virtual property DataRowVersion SourceVersion {
    DataRowVersion get () override;
    void set (DataRowVersion value) override;

/** @property */
public DataRowVersion get_SourceVersion ()

/** @property */
public void set_SourceVersion (DataRowVersion value)

public override function get SourceVersion () : DataRowVersion

public override function set SourceVersion (value : DataRowVersion)

Property Value

One of the DataRowVersion values. The default is Current.

Exceptions

Remarks

Used by UpdateCommand during an Update operation to determine whether the parameter value is set to Current or Original. This allows primary keys to be updated. This property is set to the version of the DataRow used by the Item property, or the GetChildRows method.

Example

The following example creates a SqlCeParameter and sets the SourceVersion property.

Dim cmd As SqlCeCommand = Nothing
Dim adp As SqlCeDataAdapter = Nothing

Try
    adp = New SqlCeDataAdapter()
    Dim conn As New SqlCeConnection("Data Source = MyDatabase.sdf")

    ' Create the SelectCommand
    '
    cmd = conn.CreateCommand()
    cmd.CommandText = "SELECT * FROM Orders WHERE [Ship Country] = @country AND [Ship City] = @city"
    cmd.Parameters.Add("@country", SqlDbType.NVarChar, 15)
    cmd.Parameters.Add("@city", SqlDbType.NVarChar, 15)

    cmd.Parameters("@country").Value = "UK"
    cmd.Parameters("@city").Value = "London"

    adp.SelectCommand = cmd

    ' Create the DeleteCommand
    '
    cmd = conn.CreateCommand()
    cmd.CommandText = "DELETE FROM Orders WHERE [Order ID] = @orderID"

    Dim p As SqlCeParameter = cmd.Parameters.Add("@orderID", SqlDbType.NChar, 5, "Order ID")
    p.SourceVersion = DataRowVersion.Original

    adp.DeleteCommand = cmd

    ' Populate the dataset with the results from the SELECT statement
    '
    Dim ds As New DataSet()
    adp.Fill(ds)

    ' Modify the dataset
    '
    MessageBox.Show("Number of rows: " & ds.Tables(0).Rows.Count)

    ' Delete some rows
    '
    ds.Tables(0).Rows(3).Delete()
    ds.Tables(0).Rows(4).Delete()

    ' This will execute two DELETE statements 
    '
    adp.Update(ds.Tables(0))
Catch e As Exception
    MessageBox.Show(e.Message)
Finally
    If Not Nothing Is adp.SelectCommand Then
        adp.SelectCommand.Dispose()
    End If
    If Not Nothing Is adp.DeleteCommand Then
        adp.DeleteCommand.Dispose()
    End If
End Try

SqlCeCommand cmd = null;
SqlCeDataAdapter adp = null;

try
{
    adp = new SqlCeDataAdapter();
    SqlCeConnection conn = new SqlCeConnection("Data Source = MyDatabase.sdf");

    // Create the SelectCommand
    //
    cmd = conn.CreateCommand();
    cmd.CommandText = "SELECT * FROM Orders WHERE [Ship Country] = @country AND [Ship City] = @city";
    cmd.Parameters.Add("@country", SqlDbType.NVarChar, 15);
    cmd.Parameters.Add("@city", SqlDbType.NVarChar, 15);

    cmd.Parameters["@country"].Value = "UK";
    cmd.Parameters["@city"].Value = "London";

    adp.SelectCommand = cmd;

    // Create the DeleteCommand
    //
    cmd = conn.CreateCommand();
    cmd.CommandText = "DELETE FROM Orders WHERE [Order ID] = @orderID";

    SqlCeParameter p = cmd.Parameters.Add("@orderID", SqlDbType.NChar, 5, "Order ID");
    p.SourceVersion = DataRowVersion.Original;

    adp.DeleteCommand = cmd;

    // Populate the dataset with the results from the SELECT statement
    //
    DataSet ds = new DataSet();
    adp.Fill(ds);

    // Modify the dataset
    //
    MessageBox.Show("Number of rows: " + ds.Tables[0].Rows.Count);

    // Delete some rows
    //
    ds.Tables[0].Rows[3].Delete();
    ds.Tables[0].Rows[4].Delete();

    // This will execute two DELETE statements 
    //
    adp.Update(ds.Tables[0]);

catch (Exception e)
{
    MessageBox.Show(e.Message);

finally
{
    if (null != adp.SelectCommand) adp.SelectCommand.Dispose();
    if (null != adp.DeleteCommand) adp.DeleteCommand.Dispose();

.NET Framework Security

• Full trust for the immediate caller. This member cannot be used by partially trusted code. For more information, see .

Platforms

Windows CE, Windows Mobile for Pocket PC, Windows Mobile for Smartphone, Windows XP Professional x64 Edition, Windows XP SP2

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

Version Information

.NET Compact Framework

Supported in: 2.0, 1.0

See Also

Reference

SqlCeParameter Class
SqlCeParameter Members
System.Data.SqlServerCe Namespace