XmlWriter.WriteStartAttribute Method
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When overridden in a derived class, writes the start of an attribute.
WriteStartAttribute(String, String, String) |
When overridden in a derived class, writes the start of an attribute with the specified prefix, local name, and namespace URI. |
WriteStartAttribute(String) |
Writes the start of an attribute with the specified local name. |
WriteStartAttribute(String, String) |
Writes the start of an attribute with the specified local name and namespace URI. |
For the asynchronous version of this method, see WriteStartAttributeAsync.
- Source:
- XmlWriter.cs
- Source:
- XmlWriter.cs
- Source:
- XmlWriter.cs
When overridden in a derived class, writes the start of an attribute with the specified prefix, local name, and namespace URI.
public:
abstract void WriteStartAttribute(System::String ^ prefix, System::String ^ localName, System::String ^ ns);
public abstract void WriteStartAttribute (string prefix, string localName, string ns);
public abstract void WriteStartAttribute (string? prefix, string localName, string? ns);
abstract member WriteStartAttribute : string * string * string -> unit
Public MustOverride Sub WriteStartAttribute (prefix As String, localName As String, ns As String)
Parameters
- prefix
- String
The namespace prefix of the attribute.
- localName
- String
The local name of the attribute.
- ns
- String
The namespace URI for the attribute.
Exceptions
There is a character in the buffer that is a valid XML character but is not valid for the output encoding. For example, if the output encoding is ASCII, you should only use characters from the range of 0 to 127 for element and attribute names. The invalid character might be in the argument of this method or in an argument of previous methods that were writing to the buffer. Such characters are escaped by character entity references when possible (for example, in text nodes or attribute values). However, the character entity reference is not allowed in element and attribute names, comments, processing instructions, or CDATA sections.
An XmlWriter method was called before a previous asynchronous operation finished. In this case, InvalidOperationException is thrown with the message "An asynchronous operation is already in progress."
Remarks
This method enables you to write a value using multiple Write methods.
For the asynchronous version of this method, see WriteStartAttributeAsync.
Applies to
.NET 9 and other versions
Product | Versions |
---|---|
.NET | Core 1.0, Core 1.1, Core 2.0, Core 2.1, Core 2.2, Core 3.0, Core 3.1, 5, 6, 7, 8, 9 |
.NET Framework | 1.1, 2.0, 3.0, 3.5, 4.0, 4.5, 4.5.1, 4.5.2, 4.6, 4.6.1, 4.6.2, 4.7, 4.7.1, 4.7.2, 4.8, 4.8.1 |
.NET Standard | 1.0, 1.1, 1.2, 1.3, 1.4, 1.6, 2.0, 2.1 |
UWP | 10.0 |
- Source:
- XmlWriter.cs
- Source:
- XmlWriter.cs
- Source:
- XmlWriter.cs
Writes the start of an attribute with the specified local name.
public:
void WriteStartAttribute(System::String ^ localName);
public void WriteStartAttribute (string localName);
member this.WriteStartAttribute : string -> unit
Public Sub WriteStartAttribute (localName As String)
Parameters
- localName
- String
The local name of the attribute.
Exceptions
The writer is closed.
-or-
An XmlWriter method was called before a previous asynchronous operation finished. In this case, InvalidOperationException is thrown with the message "An asynchronous operation is already in progress."
There is a character in the buffer that is a valid XML character but is not valid for the output encoding. For example, if the output encoding is ASCII, you should only use characters from the range of 0 to 127 for element and attribute names. The invalid character might be in the argument of this method or in an argument of previous methods that were writing to the buffer. Such characters are escaped by character entity references when possible (for example, in text nodes or attribute values). However, the character entity reference is not allowed in element and attribute names, comments, processing instructions, or CDATA sections.
Remarks
This method enables you to write a value using multiple Write methods.
For the asynchronous version of this method, see WriteStartAttributeAsync.
Applies to
.NET 9 and other versions
Product | Versions |
---|---|
.NET | Core 1.0, Core 1.1, Core 2.0, Core 2.1, Core 2.2, Core 3.0, Core 3.1, 5, 6, 7, 8, 9 |
.NET Framework | 2.0, 3.0, 3.5, 4.0, 4.5, 4.5.1, 4.5.2, 4.6, 4.6.1, 4.6.2, 4.7, 4.7.1, 4.7.2, 4.8, 4.8.1 |
.NET Standard | 1.0, 1.1, 1.2, 1.3, 1.4, 1.6, 2.0, 2.1 |
UWP | 10.0 |
- Source:
- XmlWriter.cs
- Source:
- XmlWriter.cs
- Source:
- XmlWriter.cs
Writes the start of an attribute with the specified local name and namespace URI.
public:
void WriteStartAttribute(System::String ^ localName, System::String ^ ns);
public void WriteStartAttribute (string localName, string ns);
public void WriteStartAttribute (string localName, string? ns);
member this.WriteStartAttribute : string * string -> unit
Public Sub WriteStartAttribute (localName As String, ns As String)
Parameters
- localName
- String
The local name of the attribute.
- ns
- String
The namespace URI of the attribute.
Exceptions
There is a character in the buffer that is a valid XML character but is not valid for the output encoding. For example, if the output encoding is ASCII, you should only use characters from the range of 0 to 127 for element and attribute names. The invalid character might be in the argument of this method or in an argument of previous methods that were writing to the buffer. Such characters are escaped by character entity references when possible (for example, in text nodes or attribute values). However, the character entity reference is not allowed in element and attribute names, comments, processing instructions, or CDATA sections.
An XmlWriter method was called before a previous asynchronous operation finished. In this case, InvalidOperationException is thrown with the message "An asynchronous operation is already in progress."
Examples
See XmlTextWriter.WriteStartAttribute for an example using this method.
Remarks
This is a more advanced version of WriteAttributeString that allows you to write an attribute value using multiple write methods, such as WriteString, WriteQualifiedName, and so on.
For the asynchronous version of this method, see WriteStartAttributeAsync.
See also
Applies to
.NET 9 and other versions
Product | Versions |
---|---|
.NET | Core 1.0, Core 1.1, Core 2.0, Core 2.1, Core 2.2, Core 3.0, Core 3.1, 5, 6, 7, 8, 9 |
.NET Framework | 1.1, 2.0, 3.0, 3.5, 4.0, 4.5, 4.5.1, 4.5.2, 4.6, 4.6.1, 4.6.2, 4.7, 4.7.1, 4.7.2, 4.8, 4.8.1 |
.NET Standard | 1.0, 1.1, 1.2, 1.3, 1.4, 1.6, 2.0, 2.1 |
UWP | 10.0 |
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