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DataSet.ReadXmlSchema Method (String)

Reads the XML schema from the specified file into the DataSet.

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

public void ReadXmlSchema(
	string fileName
)

Parameters

fileName
Type: System.String

The file name (including the path) from which to read.

ExceptionCondition
SecurityException

FileIOPermission is not set to Read.

Use the ReadXmlSchema method to create the schema for a DataSet. The schema includes table, relation, and constraint definitions. To write a schema to an XML document, use the WriteXmlSchema method.

The XML schema is written using the XSD standard.

NoteNote:

Data corruption can occur if the msdata:DataType and the xs:type types do not match. No exception will be thrown.

The ReadXmlSchema method is generally invoked before invoking the ReadXml method which is used to fill the DataSet.

NoteNote:

If the schema for your DataSet contains elements of the same name, but different type, in the same namespace, an exception is be thrown when you attempt to read the schema into the DataSet with ReadXmlSchema. This exception does not occur if you are using .NET Framework version 1.0.

Windows Mobile for Pocket PC, Windows Mobile for Smartphone, Windows CE Platform Note: Relative paths are not supported when using the file:// URI scheme. Specify absolute path information.

private void ReadSchemaFromFile(){
   // Create the DataSet to read the schema into.
   DataSet thisDataSet = new DataSet();

   // Set the file path and name. Modify this for your purposes.
   string filename="Schema.xml";

   // Invoke the ReadXmlSchema method with the file name.
   thisDataSet.ReadXmlSchema(filename);
}

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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