String find and replace

Question

I have a string like

string text="~aaa~bbb~ccc~bbbddd";

The input value will be : bbb

So in the above string i should remove the value "~bbb"

The resulting string should be

text="~aaa~ccc~bbbddd";

Answer 1

I'm not sure what are you wanna do but if i've got it you can do this :

private string ReplaceFirstOccurrence(string Source, string Find, string Replace)
{
 int Place = Source.IndexOf(Find);
 string result = Source.Remove(Place, Find.Length).Insert(Place, Replace);
 return result;
}

var result =ReplaceFirstOccurrence(text,"~"+input,"");

Answer 2

One way would be:

string text = "~aaa~bbb~ccc~bbbddd";
string newStr = string.Join("~", text.Split('~').Where(r => r != "bbb"));

But if performance is the consideration then consider some other solution