Get the part of a string before new line symbol

Question

I do want to get all the text before the first \r\n\ symbol. For example,

lalal lalal laldlasdaa daslda\r\n\Prefersaasda reanreainrea

I would need: lalal lalal laldlasdaa daslda. The above string can be empty, but it also may not contain any '\r\n\' symbol." How can I achieve this?

Answer 1

Hope that this is what you are looking for:

string inputStr = "lalal lalal laldlasdaa daslda\r\nPrefersaasda reanreainrea";
int newLineIndex =  inputStr.IndexOf("\r\n");
if(newLineIndex != -1)
{ 
  string outPutStr = inputStr.Substring(0, newLineIndex );
  // Continue
}
else
{
    // Display message no new line character 
}

Checkout an example here

Answer 2

You can use Split like this

string mystring = @"lalal lalal laldlasdaa daslda\r\n\Prefersaasda reanreainrea";
string mylines = mystring.Split(new string[] { @"\r\n" }, StringSplitOptions.None)[0];

Whereas if the string is like

string mystring = "lalal lalal laldlasdaa daslda\r\n Prefersaasda reanreainrea";
string mylines = mystring.Split(new string[] { Environment.NewLine }, StringSplitOptions.None)[0];

Environment.NewLine will also work with it. The with \r\n\P is making that string an invalid string thus \r\n P makes it a new line