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Add double quotes to a list to display in a label

Morning folks,
I have an ASP.Net C# page that pulls in a list of servers from a SQL box and displays the list of servers in a label. ("srv1,srv2,srv3"). I need to add double quotes around each of the servers names. ("srv1","srv2","srv3",)
Any help would be greatly appreached.

If you have string
string str = "srv1,srv2,srv3";
Then you can simply do
str = "\"" + str.Replace(",", "\",\"") + "\"";
Now str contains "srv1","srv2","srv3"

As far as I can understand, you are trying to use double quotes in a string.
If you want to use such,
you can use escape character:
("\"srv1\",\"srv2\",\"srv3\"",)
for the sake of simplicity, you can even convert it to a function:
private string quoteString(string serverName){
return "\"" + serverName + "\"";
}
Also, if you have already "srv1,srv2,srv3" format, find ',' characters in the string and add " before and after comma. Also, notice that you should add to first index and last index ".

How to Replace two slashes to one single slashe? C#

I have a problem with somwthing about replace char. I tryied a lot of links but get the same problem to replace (\\) to (\)
here is my code:
string mystringA = textBox.text
string mystringB = mystringA.Replace("\\", "\"");
The result of mystringB stay the same as mystringA.
I am saying because I put a debug mode to see the result
My textBox.txt = C:\Users\Braulio Jose\Desktop\impressora\myfoto.png
I have to replace the double quotes because I want to delete this photo in another place but when I follow the path, mystringA put another quote, and I this path don't exist
I am using visual studio 2013 and C# Language.
Some help. thank you

Due to the fact, that your question is about quotes, but your code is about slashes, it's hard to guess what your real problem is.
But here is some sample code for both replacements:
var replaceQuotes = "Some text with \"\"double quotes\"\"";
var replacedQuotes = replaceQuotes.Replace("\"\"", "\"");
Console.WriteLine("Before: " + replaceQuotes);
Console.WriteLine("After: " + replacedQuotes);
Console.WriteLine();
var replaceSlashes = "Some text with \\\\double slashes\\\\";
var replacedSlashes = replaceSlashes.Replace("\\\\", "\\");
Console.WriteLine("Before: " + replaceSlashes);
Console.WriteLine("After: " + replacedSlashes);
And here the output:
Before: Some text with ""double quotes""
After: Some text with "double quotes"
Before: Some text with \\double slashes\\
After: Some text with \double slashes\

C# - Add a whitespace between two strings

I have code to display a vehicle by its Make and Model.
productName.Text = p.Make + p.Model
The above code displays the text as such: "BentleyContinental", how can I make the text display as such "Bentley Continental".

You can use string.Format():
productName.Text = string.Format("{0} {1}", p.Make, p.Model);
Or you can use string interpolation (if you are on C# 6 or higher):
productName.Text = $"{p.Make} {p.Model}";
Or you can do just as you have (string concatenation) but add in a space:
productName.Text = p.Make + " " + p.Model;

Use the string.concat method to concatenate string parts.
productName.Text = string.concat(p.Make, " ", p.Model);
In general, you use the string.concat when you know you'll add less than a dozen parts. More than that, or if you are in a loop, there is more benefits using the StringBuilder class.

productName.Text = p.Make + " " + p.Model
Just concatenate a space between two words. I think this is the easiest way.

Put Quote Mark in between 2 string objects

I have looked and looked and look for a way to put a " in between 2 string objects.
I know you can use "\"" to get a quote or even #"""" for the same result.
string quote = "\"";
string cheatName = "UnlockTankLine(" + nationNum.ToString() + "," + quote +
nationTankName[1] + quote + ")";
m_cheater.ActivateCheat(cheatName);
I need a result of "UnlockTankLine(int, "name")"... but when i do the above i get something like
"UnlockTankLine(int, \"name\")" and this isn't working with a cmd line for our game.
NOW if i am dumb and \"name\" is the same thing as "name" and the problem might be somewhere else. The only reason why I think i am not being dumb is if i use a different cheat cmd that doesn't take a string it works fine. Example UnlockWholeTankLine(int) works

try
to use format
string cheatName = string.Format("UnlockTankLine({0},\"{1}\")",
nationNum.ToString(), nationTankName[1])

Add spacing to textbox results

Hi there I have the following code-
richTextBox1.Text = richTextBox1.Text + action + "ok: " + ok.ToString();
richTextBox1.Text = richTextBox1.Text + "err: " + err.ToString();
richTextBox1.Text = richTextBox1.Text + "\r\n";
textBox1.Text = textBox1.Text;
The results look like -
ok:7err:0
But I want-
ok:7
err:0
With spacing, to make it look better how can I do this?

You could add another 2 lines:
richTextBox1.Text += Environment.NewLine;
richTextBox1.Text += Environment.NewLine;
between your "ok" and "err" - assuming you want a blank line between the two lines of output. However, you should either be using string.Format or a StringBuilder to create your output as concatenating strings this way in inefficient.
You also don't need the final:
textBox1.Text = textBox1.Text;
as that is just setting the text box contents back to itself and does nothing.

You've already got your answer, you just have it in the wrong place! The key is to use the escape sequence \r\n, which inserts a carriage return and a new line.
Also, there's no reason to split this code up into multiple lines. You end up incurring a performance penalty for doing so. It's better to do all of the string concatenation at one time. (You aren't doing enough concatenations here to justify using the StringBuilder class, but it's worth keeping in mind that strings are immutable in .NET and writing code accordingly.)
Try rewriting the code like this:
textBox1.Text = textBox1.Text + action + "ok: " + ok.ToString(); + "\r\n" +
"err: " + err.ToString(); + "\r\n";
You can also complete eliminate the last line of code, as that simply sets the value of textBox1.Text to itself. It's a no-op, meaning that it does nothing at all.

first that you could do all these in a single statement, second you could use += operator instead, and third what is that last statement doing?! it not needed, fourth add "\n" after each part you need there is no limit where you should put it, no "\r" needed.