SqlCeCommand.ExecuteReader Method ()

Article
10/22/2007

Sends the CommandText to the Connection and builds a SqlCeDataReader.

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

Syntax

'Declaration
Public Function ExecuteReader As SqlCeDataReader
'Usage
Dim instance As SqlCeCommand
Dim returnValue As SqlCeDataReader

returnValue = instance.ExecuteReader

public SqlCeDataReader ExecuteReader ()

public:
SqlCeDataReader^ ExecuteReader ()

public SqlCeDataReader ExecuteReader ()

public function ExecuteReader () : SqlCeDataReader

Return Value

A SqlCeDataReader object.

Exceptions

Exception type	Condition
InvalidOperationException	Cannot execute a command within a transaction context that differs from the context in which the connection was originally enlisted.

Remarks

While the SqlCeDataReader is in use, the associated SqlCeConnection is busy serving the SqlCeDataReader. In this state, you can create multiple readers in the same connection.

Example

The following example creates a SqlCeCommand and then executes it by passing a string that is an SQL SELECT statement and a string for connecting to the data source.

Dim conn As SqlCeConnection = Nothing
Dim rdr As SqlCeDataReader = Nothing

Try
    conn = New SqlCeConnection(connStr)
    conn.Open()

    Dim cmd As New SqlCeCommand("SELECT * FROM myTable", conn)
    cmd.Connection.Open()

    rdr = cmd.ExecuteReader()

    While rdr.Read()
        Console.WriteLine(rdr.GetString(0))
    End While
Finally
    rdr.Close()
    conn.Close()
End Try

SqlCeConnection conn = null;
SqlCeDataReader rdr = null;

try
{
    conn = new SqlCeConnection(connStr);
    conn.Open();

    SqlCeCommand cmd = new SqlCeCommand("SELECT * FROM myTable", conn);
    cmd.Connection.Open();

    rdr = cmd.ExecuteReader();

    while (rdr.Read())
    {
        Console.WriteLine(rdr.GetString(0));
    

finally
{
    rdr.Close();
    conn.Close();

.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

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