.

static extern public int DTL_C_DEFINE(ref int name_id, StringBuilder def);

.

    public static void DtlErrorS(int dtlSts, StringBuilder msg, int buffSize)

.

    public static int DtlVersion(StringBuilder versionText, int maxCharsToReturn)

.

    public static int DtlCDefine(ref int nameId, StringBuilder defString)

.

        static extern public void DTL_ERROR_S(int iostat, StringBuilder msg, int buffsz);

.

        static extern public int DTL_VERSION(StringBuilder sb, int maxChars);

.

        static extern public int DTL_C_DEFINE(ref int name_id, StringBuilder def);

.

        var msg = new StringBuilder(256);

.

        var definition = new StringBuilder(256);

.

    public static void DtlErrorS(int dtlSts, StringBuilder msg, int buffSize)

.

    public static int DtlVersion(StringBuilder versionText, int maxCharsToReturn)

.

    public static int DtlCDefine(ref int nameId, StringBuilder defString)

.

        static extern public void DTL_ERROR_S(int iostat, StringBuilder msg, int buffsz);

.

        static extern public int DTL_VERSION(StringBuilder sb, int maxChars);

.

        static extern public int DTL_C_DEFINE(ref int name_id, StringBuilder def);

.

    public static void DtlErrorS(int dtlSts, StringBuilder msg, int buffSize)

.

    public static int DtlVersion(StringBuilder versionText, int maxCharsToReturn)

.

    public static int DtlCDefine(ref int nameId, StringBuilder defString)

.

        static extern public void DTL_ERROR_S(int iostat, StringBuilder msg, int buffsz);

.

        static extern public int DTL_VERSION(StringBuilder sb, int maxChars);

.

        static extern public int DTL_C_DEFINE(ref int name_id, StringBuilder def);

.

        var msg = new StringBuilder(256);

.

static extern public void DTL_ERROR_S(int iostat, StringBuilder msg, int buffsz);

.

    public static void DtlErrorS(int dtlSts, StringBuilder msg, int buffSize)

.

    public static int DtlVersion(StringBuilder versionText, int maxCharsToReturn)

.

    public static int DtlCDefine(ref int nameId, StringBuilder defString)

.

        static extern public void DTL_ERROR_S(int iostat, StringBuilder msg, int buffsz);

.

        static extern public int DTL_VERSION(StringBuilder sb, int maxChars);

.

        static extern public int DTL_C_DEFINE(ref int name_id, StringBuilder def);

.

        var msg = new StringBuilder(256);

.

    public static void DtlErrorS(int dtlSts, StringBuilder msg, int buffSize)

.

    public static int DtlVersion(StringBuilder versionText, int maxCharsToReturn)

.

    public static int DtlCDefine(ref int nameId, StringBuilder defString)

.

        static extern public void DTL_ERROR_S(int iostat, StringBuilder msg, int buffsz);

.

        static extern public int DTL_VERSION(StringBuilder sb, int maxChars);

.

        static extern public int DTL_C_DEFINE(ref int name_id, StringBuilder def);

.

    public static void DtlErrorS(int dtlSts, StringBuilder msg, int buffSize)

.

    public static int DtlVersion(StringBuilder versionText, int maxCharsToReturn)

.

    public static int DtlCDefine(ref int nameId, StringBuilder defString)

.

        static extern public void DTL_ERROR_S(int iostat, StringBuilder msg, int buffsz);

.

        static extern public int DTL_VERSION(StringBuilder sb, int maxChars);

.

        static extern public int DTL_C_DEFINE(ref int name_id, StringBuilder def);

.

        var msg = new StringBuilder(256);

.

    public static void DtlErrorS(int dtlSts, StringBuilder msg, int buffSize)

.

    public static int DtlVersion(StringBuilder versionText, int maxCharsToReturn)

.

    public static int DtlCDefine(ref int nameId, StringBuilder defString)

.

        static extern public void DTL_ERROR_S(int iostat, StringBuilder msg, int buffsz);

.

        static extern public int DTL_VERSION(StringBuilder sb, int maxChars);

.

        static extern public int DTL_C_DEFINE(ref int name_id, StringBuilder def);

.

    public static void DtlErrorS(int dtlSts, StringBuilder msg, int buffSize)

.

    public static int DtlVersion(StringBuilder versionText, int maxCharsToReturn)

.

    public static int DtlCDefine(ref int nameId, StringBuilder defString)

.

        static extern public void DTL_ERROR_S(int iostat, StringBuilder msg, int buffsz);

.

        static extern public int DTL_VERSION(StringBuilder sb, int maxChars);

.

        static extern public int DTL_C_DEFINE(ref int name_id, StringBuilder def);

.

static extern public int DTL_VERSION(StringBuilder sb, int maxChars);

.

    public static int DtlVersion(StringBuilder versionText, int maxCharsToReturn)

.

    public static void DtlErrorS(int dtlSts, StringBuilder msg, int buffSize)

.

    public static int DtlVersion(StringBuilder versionText, int maxCharsToReturn)

.

    public static int DtlCDefine(ref int nameId, StringBuilder defString)

.

        static extern public void DTL_ERROR_S(int iostat, StringBuilder msg, int buffsz);

.

        static extern public int DTL_VERSION(StringBuilder sb, int maxChars);

.

        static extern public int DTL_C_DEFINE(ref int name_id, StringBuilder def);

.

        var msg = new StringBuilder(256);

.

                StringBuilder sb = new StringBuilder();

.

     Dim sb As New StringBuilder()

.

            var builder = new StringBuilder((int) length);

.

            var builder = new StringBuilder((int) length);

.

            var builder = new StringBuilder((int) length);

.

            var builder = new StringBuilder((int) length);

.

            var builder = new StringBuilder((int) length);

.

            var builder = new StringBuilder((int) length);

.

            var builder = new StringBuilder((int) length);

.

            var builder = new StringBuilder((int) length);

.

System.Text.StringBuilder sbDisplayName = new System.Text.StringBuilder(256);

.

using LPTSTR = System.Text.StringBuilder;

.

Imports LPTSTR = System.Text.StringBuilder

.

            StringBuilder szPatchCode,

.

            StringBuilder szTargetProductCode,

.

            StringBuilder szTargetUserSid,

.

            StringBuilder szPatchCode = new StringBuilder(40);

.

            StringBuilder szTargetProductCode = new StringBuilder(40);

.

            StringBuilder szTargetUserSid = new StringBuilder(300);

.

    private static extern UInt32 MsiEnumRelatedProducts(string strUpgradeCode, int reserved, int iIndex, StringBuilder sbProductCode);

.

StringBuilder sbProductCode = new StringBuilder(39);

.

[Out] StringBuilder szXMLData,

.

StringBuilder szXMLData = new StringBuilder((int)pcchXMLData);

.

   [Out] StringBuilder szResultBuf, ref int pcchResultBuf);

.

public static extern UInt32 MsiGetComponentPath(string szProduct, string szComponent, [Out] StringBuilder lpPathBuf,  ref UInt32 pcchBuf);

.

StringBuilder sbPc = new StringBuilder(50);

.

StringBuilder sbFeat = new StringBuilder(100);

.

StringBuilder sbComp = new StringBuilder(50);

.

StringBuilder sbPth = new StringBuilder(500);

.

static extern int MsiGetFileVersion(string szFilePath, System.Text.StringBuilder lpVersionBuf, ref int pcchVersionBuf, System.Text.StringBuilder lpLangBuf, ref int pcchLangBuf);

.

    [Out] StringBuilder lpValue,

.

   StringBuilder returnValue = new StringBuilder((int)pcchValue);

.

static extern Int32 MsiGetProductInfo(string product, string property, [Out] StringBuilder valueBuf, ref Int32 len);

.

System.Text.StringBuilder builder = new System.Text.StringBuilder(len);

.

static extern int MsiGetProductProperty(IntPtr hProduct, string szProperty, StringBuilder lpValueBuf, ref uint pcchValueBuf);

.

   [Out] StringBuilder szValueBuf, ref int pchValueBuf);

.

StringBuilder sb = new StringBuilder();

.

    [Out] StringBuilder szProductCode, [Out] StringBuilder szFeatureId, [Out] StringBuilder szComponentCode);

.

  StringBuilder sbPc = new StringBuilder(50);

.

  StringBuilder sbFeat = new StringBuilder(100);

.

  StringBuilder sbComp = new StringBuilder(50);

.

   [Out] StringBuilder szPathBuf, ref int pcchPathBuf);

.

   [Out] StringBuilder szPathBuf, ref int pcchPathBuf);

.

static extern uint MsiProvideAssembly(string assembly, string context, uint mode, int info, System.Text.StringBuilder path, ref int pathSize);

.

    StringBuilder path = new StringBuilder(1024);

.

   StringBuilder szValueBuf, ref int pcchValueBuf);

.

        var builder = new StringBuilder(length + 1);

.

public static extern uint GetRoleText( uint dwRole, [Out] StringBuilder lpszRole, uint cchRoleMax);

.

    Private Shared Function GetRoleText(ByVal role As Integer, ByVal outRole As StringBuilder, ByVal outRoleSize As Integer) As Integer

.

public static extern uint GetStateText( uint dwStateBit, [Out] StringBuilder lpszStateBit, uint cchStateBitMax );

.

public extern static Int32 GetCurrentThemeName(StringBuilder stringThemeName, int lengthThemeName, StringBuilder stringColorName, int lengthColorName, StringBuilder stringSizeName, int lengthSizeName);

.

Declare Unicode Function GetCurrentThemeName Lib "uxtheme" (ByVal stringThemeName As StringBuilder, ByVal lengthThemeName As Integer, ByVal stringColorName As StringBuilder, ByVal lengthColorName As Integer, ByVal stringSizeName As StringBuilder, ByVal lengthSizeName As Integer) As Int32

.

Originally the signature had the 3 StringBuilder parameters as out params, but that did not work. Once that was removed it worked.

.

When creating the StringBuilder variable, an initial size must be set otherwise an unmanaged exception is thrown

.

    StringBuilder stringThemeName = new StringBuilder(260);

.

    StringBuilder stringColorName = new StringBuilder(260);

.

    StringBuilder stringSizeName = new StringBuilder(260);

.

    StringBuilder sbFilename = new sbFilename(0x200);

.

public extern static Int32 GetThemeDocumentationProperty(String stringThemeName, String stringPropertyName, out StringBuilder stringValue, int lengthValue);

.

Public Shared Function GetThemeDocumentationProperty(stringThemeName As [String], stringPropertyName As [String], ByRef stringValue As StringBuilder, lengthValue As Integer) As Int32

.

public extern static Int32 GetThemeFilename(IntPtr hTheme, int iPartId, int iStateId, int iPropId, StringBuilder themeFileName, int themeFileNameLength);

.

public extern static Int32 GetThemeString(IntPtr hTheme, int iPartId, int iStateId, int iPropId, out StringBuilder themeString, int themeStringLength);

.

Public Shared Function GetThemeString(hTheme As IntPtr, iPartId As Integer, iStateId As Integer, iPropId As Integer, ByRef themeString As StringBuilder, themeStringLength As Integer) As Int32

.

public extern static Int32 GetThemeSysString(IntPtr hTheme, int iStringId, out StringBuilder stringSys, int stringSysLength);

.

Public Shared Function GetThemeSysString(hTheme As IntPtr, iStringId As Integer, ByRef stringSys As StringBuilder, stringSysLength As Integer) As Int32

.

static extern bool WinHttpQueryHeaders(int lngHttpRequest, int lngInfoLevel, [MarshalAs(UnmanagedType.LPWStr)] string pwszHeaderName, StringBuilder buffer, ref int lngBufferLength, ref long lngIndex);

.

            IntPtr lpOptional, //referred to as a buffer...maybe should be a stringbuilder or string?

.

    string lpszSeedMessageID, uint flFlags, uint ulReserved, StringBuilder lpszMessageID);

.

        StringBuilder sb = new StringBuilder();

.

static extern uint CharLowerBuff([In,Out] StringBuilder lpsz, uint cchLength);

.

static extern uint CharUpperBuff([In,Out] StringBuilder lpsz, uint cchLength);

.

                    StringBuilder sb = new StringBuilder(1024);

.

        void IContextMenu.GetCommandString(int idCmd, uint uFlags, int pwReserved, StringBuilder commandString, int cchMax)

.

                commandString = new StringBuilder("...");

.

                commandString = new StringBuilder("...");

.

    internal static extern uint DragQueryFile(uint hDrop, uint iFile, StringBuilder buffer, int cch);

.

static extern int DrawTextEx(IntPtr hdc, StringBuilder lpchText, int cchText,

.

static extern int DrawTextEx(IntPtr hdc, StringBuilder lpchText, int cchText,

.

     static extern int GetClipboardFormatName(uint format, [Out] StringBuilder lpszFormatName, int cchMaxCount);

.

         StringBuilder sb = new StringBuilder(1000);

.

    public static extern int GetWindowText(IntPtr hWnd, StringBuilder lpWindowText, int nMaxCount);

.

        StringBuilder strbTitle = new StringBuilder(255);

.

   [Out] StringBuilder pszItemText, uint cchItemText);

.

  ByRef pszItemText As System.Text.StringBuilder, _

.

static extern int GetClassName(IntPtr hWnd, StringBuilder lpClassName,int nMaxCount);

.

   ByVal lpClassName As System.Text.StringBuilder, _

.

    <Out()> ByVal lpClassName As System.Text.StringBuilder, _

.

    StringBuilder ClassName = new StringBuilder(256);

.

   Dim sClassName As New StringBuilder("", 256)

.

static extern int GetClipboardFormatName(uint format, [Out] StringBuilder

.

     static extern int GetClipboardFormatName(uint format, [Out] StringBuilder lpszFormatName, int cchMaxCount);

.

         StringBuilder sb = new StringBuilder(1000);

.

   [Out] StringBuilder lpString, int nMaxCount);

.

    ByVal lpString As StringBuilder, _

.

    ByVal lpString As StringBuilder, _

.

   [Out] StringBuilder lpString, int nMaxCount);

.

    ByVal lpString As StringBuilder, _

.

    ByVal lpString As StringBuilder, _

.

static extern bool GetKeyboardLayoutName([Out] StringBuilder pwszKLID);

.

  System.Text.StringBuilder locale = new System.Text.StringBuilder(new string(' ', 256));

.

    private static extern long GetKeyboardLayoutName(StringBuilder pwszKLID);

.

      var name = new StringBuilder(KL_NAMELENGTH);

.

static extern bool GetKeyboardLayoutName([Out] StringBuilder pwszKLID);

.

  System.Text.StringBuilder locale = new System.Text.StringBuilder(new string(' ', 256));

.

static extern int GetKeyNameText(int lParam, [Out] StringBuilder lpString,

.

static extern int GetMenuString(IntPtr hMenu, uint uIDItem, [Out,MarshalAs(UnmanagedType.LPStr)] StringBuilder lpString, int nMaxCount, uint uFlag);

.

         StringBuilder menuName = new StringBuilder(0x20);

.

   [Out,MarshalAs(UnmanagedType.LPStr)] StringBuilder lpString, int nMaxCount, uint uFlag);

.

         StringBuilder menuName = new StringBuilder(0x20);

.

   StringBuilder lpszFileName, uint cchFileNameMax);

.

    lpszFileName As StringBuilder, cchFileNameMax As UInteger) As UInteger

.

StringBuilder fileName = new StringBuilder(2000);

.

static extern int LoadString(IntPtr hInstance, uint uID,StringBuilder lpBuffer, int nBufferMax);

.

Public Shared Function LoadString(ByVal hInstance As IntPtr, ByVal uID As UInt32, ByVal lpBuffer As Text.StringBuilder, ByVal nBufferMax As Integer) As Integer

.

suggests that a StringBuilder be used instead of a string type as was listed previously.

.

    StringBuilder sb = new StringBuilder(255);