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I can't mark multiple strings in my statement if, i want to make talking console app and when is typed / chat is over [closed]

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using System;
namespace Let_sTalk
{
class Program
{
static void Main(string[] args)
{
Console.Write("<-:");
string q = Console.ReadLine();
string w = Console.ReadLine();
string e = Console.ReadLine();
if (q, w, e == "/")
{
Console.WriteLine("over");
}
}
}
}

You cannot use the comma (,) symbol to separate variables in an if statement. That's invalid C# syntax.
Also, in C# string comparison is done with the Equals function. The == will still work in most cases, but there are some additional error handlings with the Equals function.
If you want to check if at least one of the q, w, e variables is equal to /, then use the following code:
if (q.Equals("/") || w.Equals("/") || e.Equals("/"))
{
Console.WriteLine("over");
}
If you wish to check if all q, w, e variables are equal to /, then you have to replace the || (or operator) with && (and operator) like so:
if (q.Equals("/") && w.Equals("/") && e.Equals("/"))
{
Console.WriteLine("over");
}

Text Contains two different strings? WebDriver C# [closed]

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I am trying to assert whether two or more strings are evident. My code currently only looks for "Good". Is there a way to look for "Good" or "Bad"?
public class Test
{
public static bool FindText()
{
var conf = Driver.Instance.FindElement(By.Id("foo"));
if (conf.Text.Contains("Good"))
{
return true;
}
throw new Exception("Text not found");
}
}

I would use System.Linq and check against all elements of an array, if there could possibly be more than two valid strings.
public class Test
{
public static bool FindText()
{
var stringsToFind = new [] { "Good", "Bad" };
var conf = Driver.Instance.FindElement(By.Id("foo"));
if (stringsToFind.Any(s => conf.Text.Contains(s))
{
return true;
}
throw new Exception("Text not found");
}
}
for only two elements to check I would propably just extend the if condition with a second condition and an or.

When trying to find a string, always make the string variable to upper or lower case. Since it's case sensitive, when the text is "GoOd", you won't find a match looking for "Good"
if(conf.Text.ToUpper().Contains("GOOD")){
//do something
}
else if(conf.Text.ToUpper().Contains("BAD")){
//do something else
}
You could also put then in only one "if" statement, if you're only interested in finding out if there's any of those by using
if(conf.Text.ToUpper().Contains("GOOD") || conf.Text.ToUpper().Contains("BAD")){
//do something for both cases
}

|| is the operator for the OR operation
if (conf.Text.Contains("Good") || conf.Text.Contains("Bad"))
PD : Stop whatever you are doing and take a look to the language docs, you need to understand what are you doing.

I want my if loop to do nothing if certain conditions are met [closed]

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i want my if loop to do nothing when the conditions that i gave it are there
i'm new to C# and winform so i searched the internet but didnt find an answer that seems to work and right now i have no idea what to do.
,Mo
screenshot of the loop

If I understand your question correctly, you want to "cancel" all operations in the current method, right? You can use return; to do that:
if(value2 == null) return;
There is just one other thing wrong with your code: value2 will never be null.
decimal value2;
if(!decimal.TryParse(result[1], out value2)) return;
should work a lot better ;)

I can't see any loop in the code provided. You want to change Parse to TryParse and use return in order to return from the method (== do nothing):
public void button14_Click(Object sender, EventArgs e) {
string[] result = input1.Text.Split(Oprator);
//TODO: it may appear, that you want TryParse here as well
decimal value1 = decimal.Parse(result[0]);
decimal value2;
// If you have too few items, and thus you have no "value2" - do nothing
if (result.Length < 2)
return;
// Try parse result[1] to decimal; if parse fails (e.g. result[1] == "zzz") - do nothing
if (!decimal.TryParse(result[1], out value2))
return;
// you have value1, value2, Oprator; put required logic here
switch (Oprator) {
...
}
}

Have you thought about a "While" loop?
int n = 1;
while (n < 6)
{
Console.WriteLine("Current value of n is {0}", n);
n++;
}

richtextbox application test c# [closed]

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I'm very new to c#. I created a forms. A richtextbox and a button in it.
I have a list of operators: Sum, Subtract,Multi,Div.I want to run a small richtextbox test. For example,in the richtextbox I write a text (eg. Sum(1,2)) and then click the button. A return result(eg.3) prints in the richtextbox.
My idea is to use string contains
foreach( var element in operatorlist)
{
string text=richtextbox.text;
if( text.contains(element)== true)
{
element(parameter1,parameter2);//something like this
}
}
I met two questions right row.
My first question is how to get the mathematical operation from the richtextbox text. Is there a better way than mine?
My second question is once we know the operator,how to allocate the two parameters in the richtextbox to the operator.
I'm not asking for coding, I'm just looking for ideas. If you have a good idea and wish to share.

You can evaluate an expression using the DataTable.Compute function:
int p1 = 1 ; string s1 = p1.ToString() ;
int p2 = 2 ; string s2 = p2.ToString() ;
int p3 = 3 ; string s3 = p3.ToString() ;
// Compute (p1+p2)*p3 ==> 9
int result = new DataTable().Compute( "("+s1+"+"+s2+")*"+s3+")","") ;
or directly:
string expression = "(1+2)*3" ;
int result = new DataTable().Compute(expression,"") ;

I think this comes down to personal style. Your way will definitely work, so good on you for that. The way I would do it is to create a Dictionary of strings to an enum. So for example, said dictionary and enum might look like this:
enum Operator { Addition = 0, Subtraction = 1, Multiplication = 2, Division = 3, etc};
var operatorDictionary = new Dictionary<string, Operator>()
{
{"Addition", Operator.Addition},
{"Subtraction", Operator.Subtraction},
etc...
};
Then to get the value you would just do
Operator operation;
operatorDictionary.TryGetValue(string operationString, out operation);
and you would have to then build some code that switches through the Operators and performs the correct operation. There is even a way of converting a string to an enum, so that would work as well.
It looks like the parameters are in a consistent format, so you would just make a simple method that splits by parenthesis and the comma, and returns the strings that it found.
Let me know if you need anything explained more.

How do I turn .Any into a for loop? [closed]

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I'm having some trouble turning the following code into a for loop. The purpose of the code is to check if the string has both a letter and a number in it.
else if (!string.Any(Char.IsLetter) || !string.Any(Char.IsDigit))
{
return false;
}
Any ideas?

Do you mean something like this?
bool anyLetter = false;
bool anyDigit = false;
foreach(var ch in str)
{
if(char.IsLetter(ch)) anyLetter = true;
if(char.IsDigit(ch)) anyDigit = true;
if(anyLetter && anyDigit) break;
}
return anyLetter || anyDigit;
Note that if this string should contain at least one digit and one letter, you need to use && instead of ||

Since Selman22 seems to have already answered the question, another solution I found is I guess you could also use RegEx:
letterCount = Regex.Matches(yourstring,#"[a-zA-Z]").Count;
numberCount = Regex.Matches(yourstring,#"\d").Count;
return letterCount != 0 && numberCount != 0;

Did you mean a loop for a set of strings?
var src = new List<string>{"A4C", "D3F", "G7I"};
var allHaveCharAndDigit = src.TrueForAll(s => s.Any(c => char.IsLetter(c)) && s.Any(c => char.IsDigit(c)));