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Replacing a string in a file

Hi ,
i want to make a utility using c# similar to replace function in the notepad. i have a file in which i want to replace the all the instances of a string with another string.
Help me in doing that .........
thanks and regards
sankalp verma
Nov 22 '06 #1
1 1273
dotexe
13
1.reading the full text using StreamReader or TextReader load them
to a string variable line

string line = sr_file.ReadToEnd();

2. line = line.Replace("oldvalue","newvalue");

3. write the value to the text using StreamWriter or TextWriter
Nov 22 '06 #2

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