I need to perform a generic cast c#

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i'm working with a class that inherits from a dynamic object , in this class I've created a function that can cast to any type of object in which the code goes like this:

C#

foreach (var tmpObject in _Props)
{
    String TmpString=GetKey(tmpObject.Key,BdInfo);
   _Props[tmpObject.Key] = Convert.ChangeType(rst.Fields[TmpString].Value, tmpObject.Value.GetType()); 
}

the rst variable is just an object where the database data is stored. When executing this function, I get an error on the Convert.changeType. Is there another way to create a generic cast based on the type of object

What I have tried:

_Props[tmpObject.Key] = Convert.ChangeType(rst.Fields[TmpString].Value,tmpObject.Value.GetType());

Posted 17-Feb-16 3:04am

Member 11736914

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Sascha Lefèvre 17-Feb-16 9:14am

Exactly which kind of type conversion fails (input type, desired output type)?

Member 11736914 17-Feb-16 9:17am

output type

Sascha Lefèvre 17-Feb-16 9:24am

No, I mean: Attempting to convert from type A to type B fails. What is A and what is B?

Member 11736914 17-Feb-16 10:20am

it basically should work for any type cause it's defined in Convert Class

Sascha Lefèvre 17-Feb-16 10:26am

Please run your project. And when you hit that error, hover over "Value" of "rst.Fields[TmpString].Value" and over "Value" of "tmpObject.Value" and observe the type information in the popup. Then please tell me those type names.

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Member 11736914 · Accepted Answer · 2016-02-17T04:28:00

i solved it , the problem was in the itterator var tmpObject it can't adapt to other types
so if my first element was an integer the var remine an integer so i used a different way to access informations that exists in my dictionary

C#

for (int i = 0; i < _Props.Count; i++)
           {
               String TmpString = GetKey(_Props.Keys.ElementAt(i), BdInfo);
               _Props[_Props.Keys.ElementAt(i)] = Convert.ChangeType(rst.Fields[TmpString].Value, _Props.Keys.ElementAt(i).GetType());

           }