string.Substring DOES NOT EXIST

[CodingIsFun]

Anyone come across this.

here is my code:

using System;
using System.Net;
using System.Xml;
using System.Collections;

namespace test
{

public class string_test
{
public string string_test(string t)
{
return t.Substring(1,1);
}
}
}

I get the error t.Substring does not exists
In the command window if I type ? t it returns the string content. If I do the same in the command window t.Substring(1,1) I get the same error.

Am I missing a reference to the string functions.

thanks in advance..

 

[chmohan]

where have you initialzed the string t?

try this



string t="abcd";
public string string_test( t)
{
return t.Substring(1,1);
}

 

[JurkMonkey]

what chmohan is saying is, make sure the string being passed in is not null.

The string functions are found directly in the System reference.

 

[chmohan]

Sorry I should have been clearer in my message,thats what i meant

 

[CodingIsFun]

Thanks for the help chmohan. The code that I posted is not what I am using, I just posted it up there so peeps can get an idea of what imnports I am using. I have spent an hour trying to figure out why the Substring and Remove functions do not exist.

basically I am trying to perform a Substring function on a string and it is giving me a silly runtime error.

here is some better code

using System;
using System.Net;
using System.Xml;
using System.Collections;

namespace test
{

public class string_test
{

public string_test()
{
}

public string string_sub_function(string t)
{
return t.Substring(1,1);
}
}
}

I make the instance then call the function
string_test substring_me = new string_test();
string work_please = substring_me.string_sub_function("eval");

bare with me I am not testing this as I go, so if there is a typo ignore it. the issue is I get a runtime error when it comes to the t.Substring(1,1). It says t.Substring does not exist. The Replace function does the same thing as well. When I run the command line ? t it returns "eval", so I know the string is there.

thanks in advance...

 

[CodingIsFun]

while t is in scope and I have created a break point on it.

I type ? t in the command window and it returns "eval"
when I type t.Substring(1,1) or t.Replace("-","") it tells me that they don't exist. I use the intellisense in the command window so I know its not case sensitivity. This is becoming a big pain in the arse. It's almost funny.

thanks for the help

 

[chiph]

How long is the string you're trying to substring? You can't get 10 characters out of a 5-character long string.

Chip H.


____________________________________________________________________
If you want to get the best response to a question, please read FAQ222-2244 first

 

[CodingIsFun]

Thanks Chip, that is not an issue, the function is always passed a string of 100 characters. If there is no data or the parameter string is null the function is not called

 

[chmohan]

Okay just to test try this

public string string_sub_function(string t)
{
string sTest= t.Substring(0,1);
return sTest;
}

 

[CodingIsFun]

same error

 

[chmohan]

public string string_sub_function(string t)
{
string sTest="String is empty";
if(t.Length>0)
{
sTest= t.Substring(0,1);
return sTest;
}
else
{
return sTest;
}

 

[chmohan]

I think there is another explanation

maybe you need to try String instead of string
or you can also try t.ToString().Substring()

 

[stsuing]

chmohan, that didn't work either.

I did a test, while I don't get a runtime error, I can't view the value in the quick watch window.

 

[CodingIsFun]

I tried the t.toString() before I posted this and it gave me the same error. Im going to try restarting my computer. LOL..

 

[chmohan]

why are u trying to use quickwatch? Try MessageBox.Show and see if u get a value

 

[CodingIsFun]

Here is what I get in the Command Window. This is pretty funny:

? detail
"***"
? detail.Substring(1,1)
error: 'detail.Substring' does not exist

 

[stsuing]

I get the same output as you in the command window, but no runtime error. Messagebox.show displayed the value correctly.

 

[CodingIsFun]

the
error:'detail.Substring' does not exist

is the runtime error

I get the same for any string function.

I restarted my computer so it had nothing to do with the state of my computer.


? detail
"***"
? detail.ToString
error: 'detail.ToString' does not exist
? detail.ToString()
error: 'detail.ToString' does not exist

There was another person in here that had the same problem a while ago, but they never posted if they found the issue.

thanks again for all your help guys/gals

 

[CodingIsFun]

I guess this is just one of those stupid things that VS Studio has to fix.

Thanks to everyone for your help today. Happy Friday .

 

[chiph]

Maybe you've got a corrupt mscorlib.dll in your GAC. Try uninstalling/reinstalling the .net framework and see if that fixes it up.

Chip H.


____________________________________________________________________
If you want to get the best response to a question, please read FAQ222-2244 first