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DbSeekOptions Enumeration

Options that specify how the Seek method will seek on an index.

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

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

[FlagsAttribute] 
public enum DbSeekOptions
/** @attribute FlagsAttribute() */ 
public enum DbSeekOptions
FlagsAttribute 
public enum DbSeekOptions
 Member nameDescription
Supported by the .NET Compact FrameworkAfterAdvances to the first row with values (in index order) after the seek value. 
Supported by the .NET Compact FrameworkAfterEqualAdvances to the last matching row on the index. If there are no matching rows, advances to the first row with values after the seek value, in index order. 
Supported by the .NET Compact FrameworkBeforeAdvances to the last row with values (in index order) before the seek value. 
Supported by the .NET Compact FrameworkBeforeEqualAdvances to the first matching row on the index. If there are no matching rows, advances to the last row with values before the seek value, in index order. 
Supported by the .NET Compact FrameworkFirstEqualAdvances to the first matching row (in index order) on the index. 
Supported by the .NET Compact FrameworkLastEqualAdvances to the last matching row (in index order) on the index.  

In this example, the FirstEqual option is specified for the Seek operation on the index.

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

    SqlCeCommand cmd = conn.CreateCommand();
    cmd.CommandType = CommandType.TableDirect;
    cmd.IndexName = "Orders_PK";
    cmd.CommandText = "Orders";

    // We are interested in orders that match Order ID = 10020
    //
    cmd.SetRange(DbRangeOptions.Match, new object[] { 10020 , null);

    SqlCeDataReader reader = cmd.ExecuteReader(CommandBehavior.Default);

    for (int i = 1; reader.Read(); i++)
    {
        MessageBox.Show(String.Format("{0 ; {1", reader["Order ID"], reader["Order Date"]));
    

    // Now we are interested in orders with Order ID between (10020, 10050)
    //
    cmd.SetRange(DbRangeOptions.InclusiveStart | DbRangeOptions.InclusiveEnd,
        new object[] { 10020 , new object[] { 10050 );

    reader = cmd.ExecuteReader(CommandBehavior.Default);

    // Now seek to Order ID = 10045
    //
    bool onRow = reader.Seek(DbSeekOptions.FirstEqual, new object[] { 10045 );

    // Now ,the reader will return rows with Order ID >= 10045 <= 10050
    // because the range was set to (10020, 10050)
    //
    if (onRow)
    {
        for (int i = 1; reader.Read(); i++)
        {
            MessageBox.Show(String.Format("{0 ; {1", reader["Order ID"], reader["Order Date"]));
        
    

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


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.

.NET Compact Framework

Supported in: 2.0, 1.0
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