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SqlParameter Class

Represents a parameter to a SqlCommand, and optionally, its mapping to DataSet columns. This class cannot be inherited.

For a list of all members of this type, see SqlParameter Members.

System.Object
   System.MarshalByRefObject
      System.Data.SqlClient.SqlParameter

[Visual Basic]
NotInheritable Public Class SqlParameter
   Inherits MarshalByRefObject
   Implements IDbDataParameter, IDataParameter, ICloneable
[C#]
public sealed class SqlParameter : MarshalByRefObject,
   IDbDataParameter, IDataParameter, ICloneable
[C++]
public __gc __sealed class SqlParameter : public
   MarshalByRefObject, IDbDataParameter, IDataParameter, ICloneable
[JScript]
public class SqlParameter extends MarshalByRefObject implements
   IDbDataParameter, IDataParameter, ICloneable

Thread Safety

Any public static (Shared in Visual Basic) members of this type are thread safe. Any instance members are not guaranteed to be thread safe.

Remarks

Parameter names are not case sensitive.

Example

[Visual Basic, C#, C++] The following example creates multiple instances of SqlParameter through the SqlParameterCollection collection within the SqlDataAdapter. These parameters are used to select data from the data source and place the data in the DataSet. This example assumes that a DataSet and a SqlDataAdapter have already been created with the appropriate schema, commands, and connection.

[Visual Basic] 
Public Sub AddSqlParameters()
    ' ...
    ' create myDataSet and myDataAdapter
    ' ...
    myDataAdapter.SelectCommand.Parameters.Add("@CategoryName", SqlDbType.VarChar, 80).Value = "toasters"
    myDataAdapter.SelectCommand.Parameters.Add("@SerialNum", SqlDbType.Int).Value = 239
    
    myDataAdapter.Fill(myDataSet)
End Sub 'AddSqlParameters 

[C#] 
public void AddSqlParameters() 
{
// ...
// create myDataSet and myDataAdapter
// ...

  myDataAdapter.SelectCommand.Parameters.Add("@CategoryName", SqlDbType.VarChar, 80).Value = "toasters";
  myDataAdapter.SelectCommand.Parameters.Add("@SerialNum", SqlDbType.Int).Value = 239;
  myDataAdapter.Fill(myDataSet);

}

[C++] 
public:
void AddSqlParameters() 
{
// ...
// create myDataSet and myDataAdapter
// ...

  myDataAdapter->SelectCommand->Parameters->Add(S"@CategoryName", SqlDbType::VarChar, 80)->Value = S"toasters";
  myDataAdapter->SelectCommand->Parameters->Add(S"@SerialNum", SqlDbType::Int)->Value = __box(239);
  myDataAdapter->Fill(myDataSet);

}

[JScript] No example is available for JScript. To view a Visual Basic, C#, or C++ example, click the Language Filter button Language Filter in the upper-left corner of the page.

Requirements

Namespace: System.Data.SqlClient

Platforms: Windows 98, Windows NT 4.0, Windows Millennium Edition, Windows 2000, Windows XP Home Edition, Windows XP Professional, Windows Server 2003 family, .NET Compact Framework

Assembly: System.Data (in System.Data.dll)

See Also

SqlParameter Members | System.Data.SqlClient Namespace | SqlParameterCollection | SqlCommand

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