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Type.GetHashCode Method
.NET Framework 1.1
Returns the hash code for this instance.
[Visual Basic] Overrides Public Function GetHashCode() As Integer [C#] public override int GetHashCode(); [C++] public: int GetHashCode(); [JScript] public override function GetHashCode() : int;
Return Value
An Int32 containing the hash code for this instance.
Remarks
This method overrides Object.GetHashCode.
Example
[Visual Basic, C#, C++] The following example displays the hash code of the System.Windows.Forms.Button class.
[Visual Basic] Imports System Imports System.Security Imports System.Reflection Imports Microsoft.VisualBasic ' Compile this sample using the following command line: ' vbc type_gethashcode_getfields.vb /r:"System.Windows.Forms.dll" /r:"System.dll" Class FieldsSample Public Shared Sub Main() Dim myType As Type = GetType(System.Net.IPAddress) Dim myFields As FieldInfo() = myType.GetFields((BindingFlags.Static Or BindingFlags.NonPublic)) Console.WriteLine(ControlChars.Lf & "The IPAddress class has the following nonpublic fields: ") Dim myField As FieldInfo For Each myField In myFields Console.WriteLine(myField.ToString()) Next myField Dim myType1 As Type = GetType(System.Net.IPAddress) Dim myFields1 As FieldInfo() = myType1.GetFields() Console.WriteLine(ControlChars.Lf & "The IPAddress class has the following public fields: ") Dim myField1 As FieldInfo For Each myField1 In myFields1 Console.WriteLine(myField.ToString()) Next myField1 Try Console.WriteLine("The HashCode of the System.Windows.Forms.Button type is: {0}", GetType(System.Windows.Forms.Button).GetHashCode()) Catch e As SecurityException Console.WriteLine("An exception occurred.") Console.WriteLine(("Message: " & e.Message)) Catch e As Exception Console.WriteLine("An exception occurred.") Console.WriteLine(("Message: " & e.Message)) End Try End Sub 'Main End Class 'FieldsSample [C#] using System; using System.Security; using System.Reflection; class FieldsSample { public static void Main() { Type myType = typeof(System.Net.IPAddress); FieldInfo [] myFields = myType.GetFields(BindingFlags.Static | BindingFlags.NonPublic); Console.WriteLine ("\nThe IPAddress class has the following nonpublic fields: "); foreach (FieldInfo myField in myFields) { Console.WriteLine(myField.ToString()); } Type myType1 = typeof(System.Net.IPAddress); FieldInfo [] myFields1 = myType1.GetFields(); Console.WriteLine ("\nThe IPAddress class has the following public fields: "); foreach (FieldInfo myField in myFields1) { Console.WriteLine(myField.ToString()); } try { Console.WriteLine("The HashCode of the System.Windows.Forms.Button type is: {0}", typeof(System.Windows.Forms.Button).GetHashCode()); } catch(SecurityException e) { Console.WriteLine("An exception occurred."); Console.WriteLine("Message: "+e.Message); } catch(Exception e) { Console.WriteLine("An exception occurred."); Console.WriteLine("Message: "+e.Message); } } } [C++] #using <mscorlib.dll> #using <system.dll> #using <system.windows.forms.dll> using namespace System; using namespace System::Security; using namespace System::Reflection; int main() { Type* myType = __typeof(System::Net::IPAddress); FieldInfo* myFields[] = myType->GetFields(static_cast<BindingFlags>(BindingFlags::Static | BindingFlags::NonPublic)); Console::WriteLine (S"\nThe IPAddress class has the following nonpublic fields: "); System::Collections::IEnumerator* myEnum = myFields->GetEnumerator(); while (myEnum->MoveNext()) { FieldInfo* myField = __try_cast<FieldInfo*>(myEnum->Current); Console::WriteLine(myField); } Type* myType1 = __typeof(System::Net::IPAddress); FieldInfo* myFields1[] = myType1->GetFields(); Console::WriteLine (S"\nThe IPAddress class has the following public fields: "); System::Collections::IEnumerator* myEnum2 = myFields1->GetEnumerator(); while (myEnum2->MoveNext()) { FieldInfo* myField = __try_cast<FieldInfo*>(myEnum2->Current); Console::WriteLine(myField); } try { Console::WriteLine(S"The HashCode of the System::Windows::Forms::Button type is: {0}", __box(__typeof(System::Windows::Forms::Button)->GetHashCode())); } catch (SecurityException* e) { Console::WriteLine(S"An exception occurred."); Console::WriteLine(S"Message: {0}", e->Message); } catch (Exception* e) { Console::WriteLine(S"An exception occurred."); Console::WriteLine(S"Message: {0}", e->Message); } }
[JScript] No example is available for JScript. To view a Visual Basic, C#, or C++ example, click the Language Filter button
in the upper-left corner of the page.
Requirements
Platforms: Windows 98, Windows NT 4.0, Windows Millennium Edition, Windows 2000, Windows XP Home Edition, Windows XP Professional, Windows Server 2003 family, .NET Compact Framework, Common Language Infrastructure (CLI) Standard
See Also
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