Convert.ToBoolean Method (Object)

Converts the value of a specified Object to an equivalent Boolean value.

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

public static bool ToBoolean(
	Object value


Type: System.Object
An Object that implements the IConvertible interface or null.

Return Value

Type: System.Boolean
true or false, which reflects the value returned by invoking the IConvertible.ToBoolean method for the underlying type of value. If value is null, the method returns false.

The following code sample illustrates the use of the ToBoolean method, converting a string value to a Boolean type.

public void ConvertStringBoolean(string stringVal)
   bool boolVal = false;

      boolVal = System.Convert.ToBoolean(stringVal);
      if (boolVal)
         outputBlock.Text += String.Format(
            "String was equal to System.Boolean.TrueString.") + "\n";
         outputBlock.Text += String.Format(
            "String was equal to System.Boolean.FalseString.") + "\n";
   catch (System.FormatException)
      outputBlock.Text += String.Format(
         "The string must equal System.Boolean.TrueString " +
         "or System.Boolean.FalseString.") + "\n";

   // A conversion from bool to string will always succeed.
   stringVal = System.Convert.ToString(boolVal);
   outputBlock.Text += String.Format("{0} as a string is {1}",
      boolVal, stringVal) + "\n";


Supported in: 5, 4, 3

Silverlight for Windows Phone

Supported in: Windows Phone OS 7.1, Windows Phone OS 7.0

XNA Framework

Supported in: Xbox 360, Windows Phone OS 7.0

For a list of the operating systems and browsers that are supported by Silverlight, see Supported Operating Systems and Browsers.

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