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MissingSchemaAction Enumeration

Specifies the action to take when adding data to the DataSet and the required DataTable or DataColumn is missing.

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

'Declaration
Public Enumeration MissingSchemaAction
'Usage
Dim instance As MissingSchemaAction

Member nameDescription
Supported by the .NET Compact FrameworkSupported by the XNA FrameworkAddAdds the necessary columns to complete the schema.
Supported by the .NET Compact FrameworkSupported by the XNA FrameworkIgnoreIgnores the extra columns.
Supported by the .NET Compact FrameworkSupported by the XNA FrameworkErrorAn InvalidOperationException is generated if the specified column mapping is missing.
Supported by the .NET Compact FrameworkSupported by the XNA FrameworkAddWithKeyAdds the necessary columns and primary key information to complete the schema. For more information about how primary key information is added to a DataTable, see FillSchema.To function properly with the .NET Framework Data Provider for OLE DB, AddWithKey requires that the native OLE DB provider obtains necessary primary key information by setting the DBPROP_UNIQUEROWS property, and then determines which columns are primary key columns by examining DBCOLUMN_KEYCOLUMN in the IColumnsRowset. As an alternative, the user may explicitly set the primary key constraints on each DataTable. This ensures that incoming records that match existing records are updated instead of appended. When using AddWithKey, the .NET Framework Data Provider for SQL Server appends a FOR BROWSE clause to the statement being executed. The user should be aware of potential side effects, such as interference with the use of SET FMTONLY ON statements. See SQL Server Books Online for more information.

The MissingSchemaAction values are used whenever an action is taken that could change the schema of the DataSet.

Windows 7, Windows Vista, Windows XP SP2, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP Starter Edition, Windows Server 2008 R2, Windows Server 2008, Windows Server 2003, Windows Server 2000 SP4, Windows Millennium Edition, Windows 98, Windows CE, Windows Mobile for Smartphone, Windows Mobile for Pocket PC, Xbox 360, Zune

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

.NET Framework

Supported in: 3.5, 3.0, 2.0, 1.1, 1.0

.NET Compact Framework

Supported in: 3.5, 2.0, 1.0

XNA Framework

Supported in: 3.0, 2.0, 1.0

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