Debug.Write Method

Definition

Writes information about the debug to the trace listeners in the Listeners collection.

Overloads

Write(String, String)

Writes a category name and message to the trace listeners in the Listeners collection.

Write(Object, String)

Writes a category name and the value of the object's ToString() method to the trace listeners in the Listeners collection.

Write(String)

Writes a message to the trace listeners in the Listeners collection.

Write(Object)

Writes the value of the object's ToString() method to the trace listeners in the Listeners collection.

Write(String, String)

Source:
Debug.cs
Source:
Debug.cs
Source:
Debug.cs

Writes a category name and message to the trace listeners in the Listeners collection.

C#
[System.Diagnostics.Conditional("DEBUG")]
public static void Write(string message, string category);
C#
[System.Diagnostics.Conditional("DEBUG")]
public static void Write(string? message, string? category);

Parameters

message
String

A message to write.

category
String

A category name used to organize the output.

Attributes

Examples

The following example creates a TraceSwitch named generalSwitch. This switch is set outside of the code sample.

If the switch is set to the TraceLevel Error or higher, the example outputs the first error message to the Listeners. For information on adding a listener to the Listeners collection, see the TraceListenerCollection class.

Then, if the TraceLevel is set to Verbose, the example outputs the second error message on the same line as the first message. A line terminator follows the second message.

C#
// Class-level declaration.
// Create a TraceSwitch.
static TraceSwitch generalSwitch = new TraceSwitch("General", "Entire Application");

static public void MyErrorMethod(Object myObject, string category)
{
    // Write the message if the TraceSwitch level is set to Error or higher.
    if (generalSwitch.TraceError)
        Debug.Write(myObject, category);

    // Write a second message if the TraceSwitch level is set to Verbose.
    if (generalSwitch.TraceVerbose)
        Debug.WriteLine(" Object is not valid for this category.");
}

Remarks

By default, the output is written to an instance of DefaultTraceListener.

Use the category parameter to group output messages.

This method calls the Write method of the trace listener.

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 1.3, 1.4, 1.6, 2.0, 2.1
UWP 10.0

Write(Object, String)

Source:
Debug.cs
Source:
Debug.cs
Source:
Debug.cs

Writes a category name and the value of the object's ToString() method to the trace listeners in the Listeners collection.

C#
[System.Diagnostics.Conditional("DEBUG")]
public static void Write(object value, string category);
C#
[System.Diagnostics.Conditional("DEBUG")]
public static void Write(object? value, string? category);

Parameters

value
Object

An object whose name is sent to the Listeners.

category
String

A category name used to organize the output.

Attributes

Examples

The following example creates a TraceSwitch named generalSwitch. This switch is set outside of the code sample.

If the switch is set to the TraceLevel Error or higher, the example outputs the first error message to the Listeners. For information on adding a listener to the Listeners collection, see the TraceListenerCollection class.

Then, if the TraceLevel is set to Verbose, the example outputs the second error message on the same line as the first message. A line terminator follows the second message.

C#
// Class-level declaration.
// Create a TraceSwitch.
static TraceSwitch generalSwitch = new TraceSwitch("General", "Entire Application");

static public void MyErrorMethod(Object myObject, string category)
{
    // Write the message if the TraceSwitch level is set to Error or higher.
    if (generalSwitch.TraceError)
        Debug.Write(myObject, category);

    // Write a second message if the TraceSwitch level is set to Verbose.
    if (generalSwitch.TraceVerbose)
        Debug.WriteLine(" Object is not valid for this category.");
}

Remarks

By default, the output is written to an instance of DefaultTraceListener.

Use the category parameter to group output messages.

This method calls the Write method of the trace listener.

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 1.3, 1.4, 1.6, 2.0, 2.1
UWP 10.0

Write(String)

Source:
Debug.cs
Source:
Debug.cs
Source:
Debug.cs

Writes a message to the trace listeners in the Listeners collection.

C#
[System.Diagnostics.Conditional("DEBUG")]
public static void Write(string message);
C#
[System.Diagnostics.Conditional("DEBUG")]
public static void Write(string? message);

Parameters

message
String

A message to write.

Attributes

Examples

The following example creates a TraceSwitch named generalSwitch. This switch is set outside of the code sample.

If the switch is set to the TraceLevel Error or higher, the example outputs the first error message to the Listeners. For information on adding a listener to the Listeners collection, see the TraceListenerCollection class.

Then, if the TraceLevel is set to Verbose, the example outputs the second error message on the same line as the first message. A line terminator follows the second message.

C#
// Class-level declaration.
// Create a TraceSwitch.
static TraceSwitch generalSwitch = new TraceSwitch("General", "Entire Application");

static public void MyErrorMethod(Object myObject, string category)
{
    // Write the message if the TraceSwitch level is set to Error or higher.
    if (generalSwitch.TraceError)
        Debug.Write(myObject, category);

    // Write a second message if the TraceSwitch level is set to Verbose.
    if (generalSwitch.TraceVerbose)
        Debug.WriteLine(" Object is not valid for this category.");
}

Remarks

By default, the output is written to an instance of DefaultTraceListener.

This method calls the Write method of the trace listener.

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 1.3, 1.4, 1.6, 2.0, 2.1
UWP 10.0

Write(Object)

Source:
Debug.cs
Source:
Debug.cs
Source:
Debug.cs

Writes the value of the object's ToString() method to the trace listeners in the Listeners collection.

C#
[System.Diagnostics.Conditional("DEBUG")]
public static void Write(object value);
C#
[System.Diagnostics.Conditional("DEBUG")]
public static void Write(object? value);

Parameters

value
Object

An object whose name is sent to the Listeners.

Attributes

Examples

The following example creates a TraceSwitch named generalSwitch. This switch is set outside of the code sample.

If the switch is set to the TraceLevel Error or higher, the example outputs the first error message to the Listeners. For information on adding a listener to the Listeners collection, see the TraceListenerCollection class.

Then, if the TraceLevel is set to Verbose, the example outputs the second error message on the same line as the first message. A line terminator follows the second message.

C#
// Class-level declaration.
// Create a TraceSwitch.
static TraceSwitch generalSwitch = new TraceSwitch("General", "Entire Application");

static public void MyErrorMethod(Object myObject, string category)
{
    // Write the message if the TraceSwitch level is set to Error or higher.
    if (generalSwitch.TraceError)
        Debug.Write(myObject, category);

    // Write a second message if the TraceSwitch level is set to Verbose.
    if (generalSwitch.TraceVerbose)
        Debug.WriteLine(" Object is not valid for this category.");
}

Remarks

By default, the output is written to an instance of DefaultTraceListener.

This method calls the Write method of the trace listener.

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 1.3, 1.4, 1.6, 2.0, 2.1
UWP 10.0