Convert String to Type in C#

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You can only use just the name of the type (with its namespace, of course) if the type is in mscorlib or the calling assembly. Otherwise, you've got to include the assembly name as well:

Type type = Type.GetType("Namespace.MyClass, MyAssembly");

If the assembly is strongly named, you've got to include all that information too. See the documentation for Type.GetType(string) for more information.

Alternatively, if you have a reference to the assembly already (e.g. through a well-known type) you can use Assembly.GetType:

Assembly asm = typeof(SomeKnownType).Assembly;
Type type = asm.GetType(namespaceQualifiedTypeName);

Convert string (System.String) to type, For example, the type variable below will have the Type object of System. GetType("System.String");. You can then use that Type in the Convert. familiar with programming in C# before you start tackling into serializers and� The ChangeType(Object, Type, IFormatProvider) method can convert a nullable type to another type. However, it cannot convert another type to a value of a nullable type, even if conversionType is the underlying type of the Nullable<T>. To perform the conversion, you can use a casting operator (in C#) or a conversion function (in Visual Basic).


Try:

Type type = Type.GetType(inputString); //target type
object o = Activator.CreateInstance(type); // an instance of target type
YourType your = (YourType)o;

Jon Skeet is right as usually :)

Update: You can specify assembly containing target type in various ways, as Jon mentioned, or:

YourType your = (YourType)Activator.CreateInstance("AssemblyName", "NameSpace.MyClass");

how do i convert string to type? help please!, for example if i have a string like this: string str = "System. then i have object like this: object obj; the question how do i convert the type of obj to the v C# string typeName = "System.Data.OleDb.OleDbParameter"; System. Here you will learn how to convert a numeric string to the integer type. In C#, you can convert a string representation of a number to an integer using the following ways: Parse() method Convert class TryParse() method - Recommended Parse Method. The Parse() methods are available for all the primitive datatypes. It is the easiest way to convert


If you really want to get the type by name you may use the following:

System.AppDomain.CurrentDomain.GetAssemblies().SelectMany(x => x.GetTypes()).First(x => x.Name == "theassembly");

Note that you can improve the performance of this drastically the more information you have about the type you're trying to load.

Casting and type conversions, int i; // error CS0029: Cannot implicitly convert type 'string' to 'int' i = "Hello";. However, you might sometimes need to copy a value into a� Because C# is statically-typed at compile time, after a variable is declared, it cannot be declared again or assigned a value of another type unless that type is implicitly convertible to the variable's type. For example, the string cannot be implicitly converted to int. Therefore, after you declare


use following LoadType method to use System.Reflection to load all registered(GAC) and referenced assemblies and check for typeName

public Type[] LoadType(string typeName)
{
    return LoadType(typeName, true);
}

public Type[] LoadType(string typeName, bool referenced)
{
    return LoadType(typeName, referenced, true);
}

private Type[] LoadType(string typeName, bool referenced, bool gac)
{
    //check for problematic work
    if (string.IsNullOrEmpty(typeName) || !referenced && !gac)
        return new Type[] { };

    Assembly currentAssembly = Assembly.GetExecutingAssembly();

    List<string> assemblyFullnames = new List<string>();
    List<Type> types = new List<Type>();

    if (referenced)
    {            //Check refrenced assemblies
        foreach (AssemblyName assemblyName in currentAssembly.GetReferencedAssemblies())
        {
            //Load method resolve refrenced loaded assembly
            Assembly assembly = Assembly.Load(assemblyName.FullName);

            //Check if type is exists in assembly
            var type = assembly.GetType(typeName, false, true);

            if (type != null && !assemblyFullnames.Contains(assembly.FullName))
            {
                types.Add(type);
                assemblyFullnames.Add(assembly.FullName);
            }
        }
    }

    if (gac)
    {
        //GAC files
        string gacPath = Environment.GetFolderPath(System.Environment.SpecialFolder.Windows) + "\\assembly";
        var files = GetGlobalAssemblyCacheFiles(gacPath);
        foreach (string file in files)
        {
            try
            {
                //reflection only
                Assembly assembly = Assembly.ReflectionOnlyLoadFrom(file);

                //Check if type is exists in assembly
                var type = assembly.GetType(typeName, false, true);

                if (type != null && !assemblyFullnames.Contains(assembly.FullName))
                {
                    types.Add(type);
                    assemblyFullnames.Add(assembly.FullName);
                }
            }
            catch
            {
                //your custom handling
            }
        }
    }

    return types.ToArray();
}

public static string[] GetGlobalAssemblyCacheFiles(string path)
{
    List<string> files = new List<string>();

    DirectoryInfo di = new DirectoryInfo(path);

    foreach (FileInfo fi in di.GetFiles("*.dll"))
    {
        files.Add(fi.FullName);
    }

    foreach (DirectoryInfo diChild in di.GetDirectories())
    {
        var files2 = GetGlobalAssemblyCacheFiles(diChild.FullName);
        files.AddRange(files2);
    }

    return files.ToArray();
}

Convert or TryParse from string to T (generic) possible? work around?, Visual C# Language. Visual C# String: //inVariable = inValue; break; case TypeCode.Single: In the case that the TryParse/Convert fails to convert to that data type, I don't mind either an exception or a bool to let me know. C# DateTime is a struct type, which is mostly used in applications to manage date, date-time, time data types. Most of time, we get a date in form of a string and we usually need to parse to a DateTime object to perform some operations like date difference, weekday, month name, formatting and so on.


How to convert a string to a number, You can convert a string to a number by calling the Parse or TryParse method found on the various numeric types ( int , long , double , etc.)� Introduction to Convert String to Double in C#. In C#, almost all types of data can be converted to any other type. In the same way, we can convert a string to double using a method present inside the “Convert” class called ToDouble() method.


Type.GetType Method (System), Gets a object that represents the specified type. GetType(String, Func< AssemblyName,Assembly>, Func<Assembly,String,Boolean,Type>) at compile time, it is more efficient to use typeof in C# or the GetType operator in Visual Basic. type, assembly, null, provided, Equivalent to converting the assembly name to an� You can use Type.GetType() to get a type from its string name. So you can do: Type DateType = Type.GetType("System.DateTime"); You can't just use "DateTime" since that's not the type's name. If you do this and the name is wrong (it doesn't exist) then it'll throw an exception. So you'll need a try/catch around this. You can get the proper type


3 Ways to Convert String to Int or Number in C#, This tutorial teaches you to convert a string into different datatype in c# like int, number, double, decimal, float, short etc. Parse, TryParse and Convert are the� Type conversion is converting one type of data to another type. It is also known as Type Casting. In C#, type casting has two forms − Implicit type conversion − These conversions are performed by C# in a type-safe manner. For example, are conversions from smaller to larger integral types and conversions from derived classes to base classes.