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How to copy a String into a struct using C#

, 10 Jun 2004
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How to copy a String into a struct using C#


This article show a simple code snippet using which you can copy a string into a struct.

Using the code

using System;
using System.Runtime.InteropServices;
using System.Text;

class Class1

    [StructLayout(LayoutKind.Sequential, CharSet=CharSet.Unicode)]
    public struct MyStruct
        [MarshalAs(UnmanagedType.ByValTStr, SizeConst=4)] public string fname;
        [MarshalAs(UnmanagedType.ByValTStr, SizeConst=4)] public string lname;
        [MarshalAs(UnmanagedType.ByValTStr, SizeConst=7)] public string phone;
    public static void Main()
        string buffer = "abcdefgh2223333";
        IntPtr pBuf = Marshal.StringToBSTR(buffer);
        MyStruct ms = (MyStruct)Marshal.PtrToStructure(pBuf,typeof(MyStruct));
        Console.WriteLine("fname is: {0}",ms.fname);
        Console.WriteLine("lname is: {0}",ms.lname);
        Console.WriteLine("phone is: {0}",;


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Comments and Discussions

GeneralMarshalling BSTR * Pinmemberburatino224-Jun-07 21:48 
GeneralMixed structures PinmemberMancunian21-Apr-06 3:00 
QuestionIs it possible to create a function of this? PinsussAnonymous7-Apr-05 17:37 
AnswerRe: Is it possible to create a function of this? Pinmemberdgiljr8-Apr-05 4:16 
GeneralRe: Is it possible to create a function of this? PinsussAnonymous26-Apr-05 15:08 
Generalpointless Pinmemberleppie10-Jun-04 7:12 
GeneralRe: pointless Pinmemberdgiljr10-Jun-04 8:35 
GeneralRe: pointless Pinmembersoumyas_v28-Oct-06 18:12 
GeneralGood, but... PinmembercasperOne10-Jun-04 2:15 
GeneralRe: Good, but... Pinmemberdgiljr10-Jun-04 4:32 
GeneralRe: Good, but... PinmembercasperOne10-Jun-04 6:21 
GeneralRe: Good, but... Pinmemberdgiljr10-Jun-04 8:32 
GeneralRe: Good, but... PinmembercasperOne10-Jun-04 8:52 
GeneralRe: Good, but... PinmemberMark Abela10-Jun-04 12:21 
GeneralRe: Good, but... Pinmemberdgiljr11-Jun-04 3:57 
GeneralRe: Good, but... PinmemberMark Abela14-Jun-04 11:42 
GeneralRe: Good, but... Pinmemberdgiljr15-Jun-04 3:46 

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