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[DllImport("kernel32")]
        private static extern long WritePrivateProfileString(
            string section,
            string key,
            string val,
            string filePath);

        [DllImport("kernel32")]
        private static extern int GetPrivateProfileString(
            string section,
            string key,
            string def,
            StringBuilder retVal,
            int size,
            string filePath);					

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public static string getentryline(string section, string entry, string standard, string file)
        {
            int result;
            int chars = 50000;
            StringBuilder buffer = new StringBuilder(chars);

            result = GetPrivateProfileString(section, entry, standard, buffer, chars, file);

            return buffer.ToString();
        }					

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//  Name = Typ; Left; Top; Width; Height usw.
Nachname_Textbox=TextBox;100;50;200;24					

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TextBox box = Nachname_Textbox;
string singleTerm = String.Format("{0}={1};{2};{3};{4};{5}",
    box.Name, box.GetType().Name,
    box.Left, box.Top, box.Width, box.Height);					

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string singleTerm = ...
int i0 = singleTerm.IndexOf('=');
string name = singleTerm.Substring(0,i0);
string[] terms = singleTerm.Substring(i0+1).Split(';');
TextBox box = new TextBox();
box.Name = name;
box.Left = int.Parse(terms[1]);