DataSet.WriteXmlSchema 方法

public:
 void WriteXmlSchema(System::String ^ fileName, Converter<Type ^, System::String ^> ^ multipleTargetConverter);

public void WriteXmlSchema (string fileName, Converter<Type,string> multipleTargetConverter);

member this.WriteXmlSchema : string * Converter<Type, string> -> unit

Public Sub WriteXmlSchema (fileName As String, multipleTargetConverter As Converter(Of Type, String))

参数

public:
 void WriteXmlSchema(System::IO::Stream ^ stream);

public void WriteXmlSchema (System.IO.Stream stream);

member this.WriteXmlSchema : System.IO.Stream -> unit

Public Sub WriteXmlSchema (stream As Stream)

参数

示例

下面的示例创建一个新 FileStream 的对象，该对象传递给 WriteXmlSchema 方法，以便将架构写入磁盘。The following example creates a new FileStream object that is passed to the WriteXmlSchema method to write the schema to disk.

private void WriteSchemaWithFileStream(DataSet thisDataSet)
{
    // Set the file path and name. Modify this for your purposes.
    string filename="Schema.xml";

    // Create the FileStream object with the file name.
    // Use FileMode.Create.
    System.IO.FileStream stream =
        new System.IO.FileStream(filename,System.IO.FileMode.Create);

    // Write the schema to the file.
    thisDataSet.WriteXmlSchema(stream);

    // Close the FileStream.
    stream.Close();
}

Private Sub WriteSchemaWithFileStream(thisDataSet As DataSet)
    ' Set the file path and name. Modify this for your purposes.
    Dim filename As String = "Schema.xml"

    ' Create the FileStream object with the file name. 
    ' Use FileMode.Create.
    Dim stream As New System.IO.FileStream _
        (filename, System.IO.FileMode.Create)

    ' Write the schema to the file.
    thisDataSet.WriteXmlSchema(stream)

    ' Close the FileStream.
    stream.Close()
End Sub

注解

使用 WriteXmlSchema 方法可将的架构写入 DataSet XML 文档。Use the WriteXmlSchema method to write the schema for a DataSet to an XML document. 此架构包括表、关系和约束定义。The schema includes table, relation, and constraint definitions. 若要将架构写入 XML 文档，请使用 WriteXmlSchema 方法。To write a schema to an XML document, use the WriteXmlSchema method.

使用 XSD 标准编写 XML 架构。The XML schema is written using the XSD standard.

若要将数据写入 XML 文档，请使用 WriteXml 方法。To write the data to an XML document, use the WriteXml method.

派生自类的类 Stream 包括 BufferedStream 、 FileStream 、 MemoryStream 和 NetworkStream 。Classes that derive from the Stream class include BufferedStream, FileStream, MemoryStream, and NetworkStream.

另请参阅

• 在 ADO.NET 中使用数据集Using DataSets in ADO.NET

public:
 void WriteXmlSchema(System::IO::TextWriter ^ writer);

public void WriteXmlSchema (System.IO.TextWriter writer);

member this.WriteXmlSchema : System.IO.TextWriter -> unit

Public Sub WriteXmlSchema (writer As TextWriter)

参数

示例

下面的示例创建一个用于 System.Text.StringBuilder 创建新的对象 System.IO.StringWriter 。The following example creates a System.Text.StringBuilder object to that is used to create a new System.IO.StringWriter. StringWriter传递给 WriteXmlSchema 方法，生成的字符串将打印到控制台窗口。The StringWriter is passed to the WriteXmlSchema method, and the resulting string is printed to the console window.

private void WriteSchemaWithStringWriter(DataSet thisDataSet)
{
    // Create a new StringBuilder object.
    System.Text.StringBuilder builder = new System.Text.StringBuilder();

    // Create the StringWriter object with the StringBuilder object.
    System.IO.StringWriter writer = new System.IO.StringWriter(builder);

    // Write the schema into the StringWriter.
    thisDataSet.WriteXmlSchema(writer);

    // Print the string to the console window.
    Console.WriteLine(writer.ToString());
}

Private Sub WriteSchemaWithStringWriter(thisDataSet As DataSet)
    ' Create a new StringBuilder object.
    Dim builder As New System.Text.StringBuilder()

    ' Create the StringWriter object with the StringBuilder object.
    Dim writer As New System.IO.StringWriter(builder)

    ' Write the schema into the StringWriter.
    thisDataSet.WriteXmlSchema(writer)

    ' Print the string to the console window.
    Console.WriteLine(writer.ToString())
End Sub

注解

使用 WriteXmlSchema 方法可将的架构写入 DataSet XML 文档。Use the WriteXmlSchema method to write the schema for a DataSet to an XML document. 此架构包括表、关系和约束定义。The schema includes table, relation, and constraint definitions. 若要将架构写入 XML 文档，请使用 WriteXmlSchema 方法。To write a schema to an XML document, use the WriteXmlSchema method.

使用 XSD 标准编写 XML 架构。The XML schema is written using the XSD standard.

若要将数据写入 XML 文档，请使用 WriteXml 方法。To write the data to an XML document, use the WriteXml method.

派生自类的类 System.IO.TextWriter 包括 System.Web.HttpWriter 、、、 System.CodeDom.Compiler.IndentedTextWriter System.Web.UI.HtmlTextWriter System.IO.StreamWriter 和 System.IO.StringWriter 。Classes the derive from the System.IO.TextWriter class include the System.Web.HttpWriter, System.CodeDom.Compiler.IndentedTextWriter, System.Web.UI.HtmlTextWriter, System.IO.StreamWriter, and System.IO.StringWriter.

另请参阅

• 在 ADO.NET 中使用数据集Using DataSets in ADO.NET

public:
 void WriteXmlSchema(System::String ^ fileName);

public void WriteXmlSchema (string fileName);

member this.WriteXmlSchema : string -> unit

Public Sub WriteXmlSchema (fileName As String)

参数

例外

示例

private void WriteSchemaToFile(DataSet thisDataSet)
{
    // Set the file path and name. Modify this for your purposes.
    string filename="Schema.xml";

    // Write the schema to the file.
    thisDataSet.WriteXmlSchema(filename);
}

Private Sub WriteSchemaToFile(thisDataSet As DataSet)
    ' Set the file path and name. Modify this for your purposes.
    Dim filename As String = "Schema.xml"

    ' Write the schema to the file.
    thisDataSet.WriteXmlSchema(filename)
End Sub

注解

使用 WriteXmlSchema 方法可将的架构写入 DataSet XML 文档。Use the WriteXmlSchema method to write the schema for a DataSet to an XML document. 此架构包括表、关系和约束定义。The schema includes table, relation, and constraint definitions. 若要将架构写入 XML 文档，请使用 WriteXmlSchema 方法。To write a schema to an XML document, use the WriteXmlSchema method.

使用 XSD 标准编写 XML 架构。The XML schema is written using the XSD standard.

若要将数据写入 XML 文档，请使用 WriteXml 方法。To write the data to an XML document, use the WriteXml method.

另请参阅

• 在 ADO.NET 中使用数据集Using DataSets in ADO.NET

public:
 void WriteXmlSchema(System::Xml::XmlWriter ^ writer);

public void WriteXmlSchema (System.Xml.XmlWriter writer);

member this.WriteXmlSchema : System.Xml.XmlWriter -> unit

Public Sub WriteXmlSchema (writer As XmlWriter)

参数

示例

下面的示例 System.IO.FileStream 使用指定的路径创建一个新的对象。The following example creates a new System.IO.FileStream object with the specified path. FileStream对象用于创建 XmlTextWriter 对象。The FileStream object is used to create an XmlTextWriter object. WriteXmlSchema然后，通过对象调用方法， XmlTextWriter 将架构写入磁盘。The WriteXmlSchema method is then invoked with the XmlTextWriter object to write the schema to the disk.

private void WriteSchemaWithXmlTextWriter(DataSet thisDataSet)
{
    // Set the file path and name. Modify this for your purposes.
    string filename="SchemaDoc.xml";

    // Create a FileStream object with the file path and name.
    System.IO.FileStream stream = new System.IO.FileStream
        (filename,System.IO.FileMode.Create);

    // Create a new XmlTextWriter object with the FileStream.
    System.Xml.XmlTextWriter writer =
        new System.Xml.XmlTextWriter(stream,
        System.Text.Encoding.Unicode);

    // Write the schema into the DataSet and close the reader.
    thisDataSet.WriteXmlSchema(writer );
    writer.Close();
}

Private Sub WriteSchemaWithXmlTextWriter(thisDataSet As DataSet)
    ' Set the file path and name. Modify this for your purposes.
    Dim filename As String = "SchemaDoc.xml"

    ' Create a FileStream object with the file path and name.
    Dim stream As New System.IO.FileStream _
       (filename, System.IO.FileMode.Create)

    ' Create a new XmlTextWriter object with the FileStream.
    Dim writer As New System.Xml.XmlTextWriter _
       (stream, System.Text.Encoding.Unicode)

    ' Write the schema into the DataSet and close the reader.
    thisDataSet.WriteXmlSchema(writer)
    writer.Close()
End Sub

注解

使用 WriteXmlSchema 方法可将的架构写入 DataSet XML 文档。Use the WriteXmlSchema method to write the schema for a DataSet to an XML document. 此架构包括表、关系和约束定义。The schema includes table, relation, and constraint definitions. 若要将架构写入 XML 文档，请使用 WriteXmlSchema 方法。To write a schema to an XML document, use the WriteXmlSchema method.

使用 XSD 标准编写 XML 架构。The XML schema is written using the XSD standard.

若要将数据写入 XML 文档，请使用 WriteXml 方法。To write the data to an XML document, use the WriteXml method.

继承自类的一个类 System.Xml.XmlWriter 是 XmlTextWriter 类。One class that inherits from the System.Xml.XmlWriter class is the XmlTextWriter class.

另请参阅

• 在 ADO.NET 中使用数据集Using DataSets in ADO.NET

public:
 void WriteXmlSchema(System::IO::Stream ^ stream, Converter<Type ^, System::String ^> ^ multipleTargetConverter);

public void WriteXmlSchema (System.IO.Stream? stream, Converter<Type,string> multipleTargetConverter);

public void WriteXmlSchema (System.IO.Stream stream, Converter<Type,string> multipleTargetConverter);

member this.WriteXmlSchema : System.IO.Stream * Converter<Type, string> -> unit

Public Sub WriteXmlSchema (stream As Stream, multipleTargetConverter As Converter(Of Type, String))

参数

public:
 void WriteXmlSchema(System::IO::TextWriter ^ writer, Converter<Type ^, System::String ^> ^ multipleTargetConverter);

public void WriteXmlSchema (System.IO.TextWriter? writer, Converter<Type,string> multipleTargetConverter);

public void WriteXmlSchema (System.IO.TextWriter writer, Converter<Type,string> multipleTargetConverter);

member this.WriteXmlSchema : System.IO.TextWriter * Converter<Type, string> -> unit

Public Sub WriteXmlSchema (writer As TextWriter, multipleTargetConverter As Converter(Of Type, String))

参数

public:
 void WriteXmlSchema(System::Xml::XmlWriter ^ writer, Converter<Type ^, System::String ^> ^ multipleTargetConverter);

public void WriteXmlSchema (System.Xml.XmlWriter? writer, Converter<Type,string> multipleTargetConverter);

public void WriteXmlSchema (System.Xml.XmlWriter writer, Converter<Type,string> multipleTargetConverter);

member this.WriteXmlSchema : System.Xml.XmlWriter * Converter<Type, string> -> unit

Public Sub WriteXmlSchema (writer As XmlWriter, multipleTargetConverter As Converter(Of Type, String))

参数