Converting String to User Defined Type

[gmccallum]

I am trying to convert the value of a string to a defined enum value such as
follows.

public enum MyEnum { One, Two };

string MyString = "One";
// or even this is fine
string MyString2 = "MyEnum.One ";

// This doesn't work (obviously), but effectively this
// is what I am trying to accomplish.
MyEnum ConvertedString = (MyEnum)MyStrin g;

Is there a way using the TYPE object or reflection to accomplish this goal?
I am a pretty advanced developer and understand most topics and commands,
so feel free to offer any ideas.

I know the example is silly and why would anyone do this, but
I am really trying to read these enum values from a text file and
assign them to a variable within a class I have, but it would have
clouded the question if I showed all of that code.
I hope the simple example is enough?

Thanks for any help.

Greg

[SimonT]

string MyString = "One";

MyEnum ConvertedString = (MyEnum)Enum.Pa rse(typeof(MyEn um), MyString, true);
"gmccallum" wrote:

I am trying to convert the value of a string to a defined enum value such as
follows.

public enum MyEnum { One, Two };

string MyString = "One";
// or even this is fine
string MyString2 = "MyEnum.One ";

// This doesn't work (obviously), but effectively this
// is what I am trying to accomplish.
MyEnum ConvertedString = (MyEnum)MyStrin g;

Is there a way using the TYPE object or reflection to accomplish this goal?
I am a pretty advanced developer and understand most topics and commands,
so feel free to offer any ideas.

I know the example is silly and why would anyone do this, but
I am really trying to read these enum values from a text file and
assign them to a variable within a class I have, but it would have
clouded the question if I showed all of that code.
I hope the simple example is enough?

Thanks for any help.

Greg

[gmccallum]

Thank you so much. I don't know why I didn't even look for that when I knew
that Int32.Parse existed.
"SimonT" wrote:

string MyString = "One";

MyEnum ConvertedString = (MyEnum)Enum.Pa rse(typeof(MyEn um), MyString, true);
"gmccallum" wrote:

I am trying to convert the value of a string to a defined enum value such as
follows.

public enum MyEnum { One, Two };

string MyString = "One";
// or even this is fine
string MyString2 = "MyEnum.One ";

// This doesn't work (obviously), but effectively this
// is what I am trying to accomplish.
MyEnum ConvertedString = (MyEnum)MyStrin g;

Is there a way using the TYPE object or reflection to accomplish this goal?
I am a pretty advanced developer and understand most topics and commands,
so feel free to offer any ideas.

I know the example is silly and why would anyone do this, but
I am really trying to read these enum values from a text file and
assign them to a variable within a class I have, but it would have
clouded the question if I showed all of that code.
I hope the simple example is enough?

Thanks for any help.

Greg

[Chris Priede]

gmccallum wrote:

I am trying to convert the value of a string to a defined enum
value such as follows. Is there a way using the TYPE object
or reflection to accomplish this goal?

Unless I am completely misunderstandin g your question -- I think you are
looking for Enum.Parse().

http://msdn.microsoft.com/library/en...parsetopic.asp
--
Chris Priede (pr****@panix.c om)

[Robert W.]

Simon (et al),

I like your approach:
MyEnum ConvertedString = (MyEnum)Enum.Pa rse(typeof(MyEn um), MyString, true);

But is there a way to make such a conversion if I can't explicitly
(hard-code) the Enum type into the statement?

I have a situation where I'm using reflection to set a value. Here is the
code I've successfully been using:
propInfo.SetVal ue(node.Obj, Convert.ChangeT ype(newval,
propInfo.Proper tyType, null), indexer);

This has worked perfectly for the basic user types (ex. string, bool, int,
etc.) but fails if I try to introduce a property that is defined with a type
of one of my Enums.

Any ideas?
--
Robert W.
Vancouver, BC
www.mwtech.com

"SimonT" wrote:

string MyString = "One";

MyEnum ConvertedString = (MyEnum)Enum.Pa rse(typeof(MyEn um), MyString, true);
"gmccallum" wrote:

I am trying to convert the value of a string to a defined enum value such as
follows.

public enum MyEnum { One, Two };

string MyString = "One";
// or even this is fine
string MyString2 = "MyEnum.One ";

// This doesn't work (obviously), but effectively this
// is what I am trying to accomplish.
MyEnum ConvertedString = (MyEnum)MyStrin g;

Is there a way using the TYPE object or reflection to accomplish this goal?
I am a pretty advanced developer and understand most topics and commands,
so feel free to offer any ideas.

I know the example is silly and why would anyone do this, but
I am really trying to read these enum values from a text file and
assign them to a variable within a class I have, but it would have
clouded the question if I showed all of that code.
I hope the simple example is enough?

Thanks for any help.

Greg

[Derrick]

Just a shot in the dark here...

Since you have propInfo.Proper tyType, which is a System.Type, you should be
able to check System.Type.IsE num to see if the type in question is an
enumeration. Then, you may be able to parse based on that. Something to
the effect of (note: I didn't test this):

if(propInfo.Pro pertyType.IsEnu m)
{
object val = Enum.Parse(prop Info.PropertyTy pe, newVal);
propInfo.SetVal ue(node.Obj, val, indexer);
}
//Maybe need some else if's for different property types??
else
{
//your existing code:
propInfo.SetVal ue(node.Obj, Convert.ChangeT ype(newval,
propInfo.Proper tyType, null), indexer);

}
"Robert W." <Ro*****@discus sions.microsoft .com> wrote in message
news:81******** *************** ***********@mic rosoft.com...

Simon (et al),

I like your approach:
MyEnum ConvertedString = (MyEnum)Enum.Pa rse(typeof(MyEn um), MyString,
true);

But is there a way to make such a conversion if I can't explicitly
(hard-code) the Enum type into the statement?

I have a situation where I'm using reflection to set a value. Here is the
code I've successfully been using:
propInfo.SetVal ue(node.Obj, Convert.ChangeT ype(newval,
propInfo.Proper tyType, null), indexer);

This has worked perfectly for the basic user types (ex. string, bool, int,
etc.) but fails if I try to introduce a property that is defined with a
type
of one of my Enums.

Any ideas?
--
Robert W.
Vancouver, BC
www.mwtech.com

"SimonT" wrote:

string MyString = "One";

MyEnum ConvertedString = (MyEnum)Enum.Pa rse(typeof(MyEn um), MyString,
true);
"gmccallum" wrote:

> I am trying to convert the value of a string to a defined enum value
> such as
> follows.
>
> public enum MyEnum { One, Two };
>
> string MyString = "One";
> // or even this is fine
> string MyString2 = "MyEnum.One ";
>
> // This doesn't work (obviously), but effectively this
> // is what I am trying to accomplish.
> MyEnum ConvertedString = (MyEnum)MyStrin g;
>
> Is there a way using the TYPE object or reflection to accomplish this
> goal?
> I am a pretty advanced developer and understand most topics and
> commands,
> so feel free to offer any ideas.
>
> I know the example is silly and why would anyone do this, but
> I am really trying to read these enum values from a text file and
> assign them to a variable within a class I have, but it would have
> clouded the question if I showed all of that code.
> I hope the simple example is enough?
>
> Thanks for any help.
>
> Greg
>