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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#

Introduction

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}",ms.phone);
        Marshal.FreeBSTR(pBuf);
    }
}

License

This article has no explicit license attached to it but may contain usage terms in the article text or the download files themselves. If in doubt please contact the author via the discussion board below.

A list of licenses authors might use can be found here

About the Author

dgiljr
Web Developer
United States United States
No Biography provided

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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