DataSet.WriteXmlSchema Método

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))

Parâmetros

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)

Parâmetros

Exemplos

O exemplo seguinte cria um novo FileStream objeto que é passado ao WriteXmlSchema método para escrever o esquema no disco.

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

Observações

Use o WriteXmlSchema método para escrever o esquema para DataSet um documento XML. O esquema inclui definições de tabela, relação e restrições. Para escrever um esquema num documento XML, use o WriteXmlSchema método.

O esquema XML é escrito usando o padrão XSD.

Para escrever os dados num documento XML, use o WriteXml método.

Classes que derivam da Stream classe incluem BufferedStream, FileStream, MemoryStream, e NetworkStream.

Ver também

• 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)

Parâmetros

Exemplos

O exemplo seguinte cria um System.Text.StringBuilder objeto para que é usado para criar um novo System.IO.StringWriter. O StringWriter é passado para o WriteXmlSchema método, e a string resultante é impressa na janela do console.

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

Observações

Use o WriteXmlSchema método para escrever o esquema para DataSet um documento XML. O esquema inclui definições de tabela, relação e restrições. Para escrever um esquema num documento XML, use o WriteXmlSchema método.

O esquema XML é escrito usando o padrão XSD.

Para escrever os dados num documento XML, use o WriteXml método.

As classes que derivam da System.IO.TextWriter classe incluem , System.Web.HttpWriterSystem.CodeDom.Compiler.IndentedTextWriter, System.Web.UI.HtmlTextWriter, System.IO.StreamWriter, e System.IO.StringWriter.

Ver também

• 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)

Parâmetros

Exceções

Exemplos

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

Observações

Use o WriteXmlSchema método para escrever o esquema para DataSet um documento XML. O esquema inclui definições de tabela, relação e restrições. Para escrever um esquema num documento XML, use o WriteXmlSchema método.

O esquema XML é escrito usando o padrão XSD.

Para escrever os dados num documento XML, use o WriteXml método.

Ver também

• 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)

Parâmetros

Exemplos

O exemplo seguinte cria um novo System.IO.FileStream objeto com o caminho especificado. O FileStream objeto é usado para criar um XmlTextWriter objeto. O WriteXmlSchema método é então invocado com o XmlTextWriter objeto para escrever o esquema no disco.

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

Observações

Use o WriteXmlSchema método para escrever o esquema para DataSet um documento XML. O esquema inclui definições de tabela, relação e restrições. Para escrever um esquema num documento XML, use o WriteXmlSchema método.

O esquema XML é escrito usando o padrão XSD.

Para escrever os dados num documento XML, use o WriteXml método.

Uma classe que herda da System.Xml.XmlWriter classe é a XmlTextWriter classe.

Ver também

• 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);

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

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

Parâmetros

public:
 void WriteXmlSchema(System::IO::TextWriter ^ writer, Converter<Type ^, System::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))

Parâmetros

public:
 void WriteXmlSchema(System::Xml::XmlWriter ^ writer, Converter<Type ^, System::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))

Parâmetros