SqlParameter.DbType Property

Reference

Definition

Namespace:: System.Data.SqlClient

Assembly:: System.Data.SqlClient.dll

Assembly:: System.Data.dll

Package:: System.Data.SqlClient v4.8.6

Important

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Gets or sets the SqlDbType of the parameter.

public:
 virtual property System::Data::DbType DbType { System::Data::DbType get(); void set(System::Data::DbType value); };

public:
 property System::Data::DbType DbType { System::Data::DbType get(); void set(System::Data::DbType value); };

public override System.Data.DbType DbType { get; set; }

[System.ComponentModel.Browsable(false)]
[System.Data.DataSysDescription("DataParameter_DbType")]
public System.Data.DbType DbType { get; set; }

member this.DbType : System.Data.DbType with get, set

[<System.ComponentModel.Browsable(false)>]
[<System.Data.DataSysDescription("DataParameter_DbType")>]
member this.DbType : System.Data.DbType with get, set

Public Overrides Property DbType As DbType

Public Property DbType As DbType

Property Value

DbType

One of the SqlDbType values. The default is NVarChar.

Implements

DbType

Attributes: BrowsableAttribute DataSysDescriptionAttribute

Examples

The following example creates a SqlParameter and sets some of its properties.

    private static void AddSqlParameter(SqlCommand command,
        string paramValue)
    {
        SqlParameter parameter = new SqlParameter(
            "@Description", SqlDbType.VarChar);
        parameter.Value = paramValue;
        parameter.IsNullable = true;
        command.Parameters.Add(parameter);
    }

private static void SetParameterToNull(IDataParameter parameter)
{
    if (parameter.IsNullable)
    {
        parameter.Value = DBNull.Value;
    }
    else
    {
        throw new ArgumentException("Parameter provided is not nullable", "parameter");
    }
}

 Private Sub AddSqlParameter(ByVal command As SqlCommand, _
     ByVal paramValue As String)

     Dim parameter As New SqlParameter( _
         "@Description", SqlDbType.NVarChar, 16)
     parameter.Value = paramValue
     parameter.IsNullable = True
     command.Parameters.Add(parameter)
 End Sub

 Private Shared Sub SetParameterToNull(parameter As IDataParameter)
     If parameter.IsNullable Then
     parameter.Value = DBNull.Value
     Else
         Throw New ArgumentException("Parameter provided is not nullable", "parameter")
     End If
End Sub

Remarks

The SqlDbType and DbType are linked. Therefore, setting the DbType changes the SqlDbType to a supporting SqlDbType.

For a list of the supported data types, see the appropriate SqlDbType member. For more information, see DataAdapter Parameters.

Applies to

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