Strings again...

[Mothra]

Alright, I'm stuck once more. Here's the deal. I'm trying to iterate through a string and replace certain parts that are marked with a special character. The problem is that I don't want to do a general .Replace, I want to read through the string and as I come to the marked position, I want to replace the character directly following the marker with a value from an array. I guess what I really want is similar functionality to Mid() in good old VB 6 (something that will let me specify the position where the replacment should take place). Am I out of luck?

 

Help me Obi Wan...you're my only hope...

[NK2000]

first look at the String class, it would be really helpful if you give me/us an example so we can tell you an algorythm, if you dont want to use replace then you have to work with substring i think

[Mothra]

Example...

 

I guess that WOULD help a little....

 

The string I'm be using would look like this, The characters I want to replace are preceded by a '~'

 

this wouls be taken out of a richTextBox

 

~A ~B ~C ~D

This is some sample text

~E ~F ~G ~H

This is some sample text

 

(the real string will be formatted just like this but have many more lines...)

 

and assigned to a string variable

 

string myString = richTextBox1.Text;

 

I want to replace the '~A', '~B', '~C' and '~D'(...) with values from an array, call it

string[] values;

 

The '~A' would be replaced by values[0], the '~B' would become values[1] and so on...The only trouble I'm having is getting the values into myString. Doing a blanked .Replace has the possibility of re-converting a character so I really need to run through the string and replace them as I come to them.

[NK2000]

string text = " .... ";

for (int i=0; i < text.Length; i++)
{
   if (text.Chars[i] == '~')
       text = text.Substring(0, i) + values[i] + text.Substring(i+1);
}

 

i didnt test it, but tell me if any error occurs

[Mothra]

String does not have a .Chars[]...I think, though, if I convert the string to a char[] and then iterate through the char[] and replace the individual characters as I come to them. I'm trying to make that work right now....

[akiaz]

Use the Regex.Replace method to find and exchange your ~X code. You'll need one for each code you want to swap. I don't see a reason to iterate through the string letter by letter if you use this route.

[Mothra]

I'll check that out but, I did find a solution. I converted the string into a character array and that seemed to do the trick. I might play with the Regex.Replace but, since I got the logic to work with the char[] I'm not sure I'll change it now... Thank you both for all your help!