C# Is it possible to testing if statement using immediate window in visual studio?

Question

i want to test if statements directly, my problem is it's waiting so many long to test my if statements in my code. this is my code :

    byte isFive = _checkReadLengthIsFive;

    if (readLength == 5)
    {
        isFive++;
        _checkReadLengthIsFive = isFive;
        if (isFive == 2)
        {
           string appendText = "WRITE FAIL" + Environment.NewLine;
           File.AppendAllText(Fullpath, appendText);
           DisplayData(MessageType.Incoming, "DAPAT!" + "\n");
        }
    }

to reach in this if statement, i waiting so long because readLength = 5 is rarely happening. Is it possible to use immediate window? if possible please tell me how? thanks for helping and responses.

Short ans: No, immediate window only can help you execute code without variables (i.e. 5==6). You may find more information in this post: http://stackoverflow.com/a/1361136/1050927. — Prisoner, Sep 28 '16 at 02:02
Unit Tests are useful for this, you can setup your test so that you can test edge cases — Keith Nicholas, Sep 28 '16 at 02:04
1) use breakpoints to stop at the desired line of code before it is evaluated. 2) use watches for monitoring variables. 3) If you wanna get or set the values of scope variables then use the immediate window. — jegtugado, Sep 28 '16 at 02:07
how to test if statement directly in immediate window? is it possible? — yosafat, Sep 28 '16 at 02:09
If you use breakpoint as suggested, you don't need to test in immediate window. — NoChance, Sep 28 '16 at 02:16
i use breakpoint but i still wait so long because the if statement is rarely happen and breakpoint not run. — yosafat, Sep 28 '16 at 02:19

score 1 · Answer 1 · answered Sep 28 '16 at 02:16

1

Yes you can change a variable's value in the immediate window while your code is running (debugging). You should be able to set the variable's value by using the window and typing something like readLength = 5;. You are also able to hover the mouse over the variable and click on the value and type in a new value.

answered Sep 28 '16 at 02:16

Brendan L

1,436
14
13

what must i type in immediate window? i see only blank sir – yosafat Sep 28 '16 at 02:17
Watch window too. – 15ee8f99-57ff-4f92-890c-b56153 Sep 28 '16 at 02:19
By the way, the immediate window and watch window are only useful when your program has hit a breakpoint. Put a breakpoint on your line 'if(readLength == 5), when that breakpoint is hit type 'readLength = 6' into the immediate window. Here is a short but handy tutorial on the immediate window to get you started: http://www.blackwasp.co.uk/VSImmediate.aspx – Brendan L Sep 28 '16 at 02:23
this if is rarely happen sir, when we waiting breakpoint hit if(readLength==5), it's waste time too long because that if rarely happens – yosafat Sep 28 '16 at 02:32

score 0 · Accepted Answer · answered Sep 28 '16 at 02:10

0

If you want to test your code inside if statement, just change the code from

if (readLength == 5)

to

if (true)

After everything is ok, you change back to if (readLength == 5)

answered Sep 28 '16 at 02:10

Huu Thien Tan Nguyen

164
1
11

change in immediate window or where ? – yosafat Sep 28 '16 at 02:11
I think no need to use immediate window. As you say you need to wait so long to make the if statement happens, my idea is why don't modify the code to make the if statement happen, then test the code inside if statement. – Huu Thien Tan Nguyen Sep 28 '16 at 02:13
oh so if we want to test the code only with if(true) – yosafat Sep 28 '16 at 02:15
why be like that? sorry i am really new in c# . could you explain it more detail? – yosafat Sep 28 '16 at 02:16
AS I understand, you want to test if statements directly, and your problem is it's waiting so many long to test your if statements in your code, so change the code to if (true) so that it can always happen then you no need to wait so long to test your code. – Huu Thien Tan Nguyen Sep 28 '16 at 02:19
this is already i try and this is what i need! big thanks for you. @Huu Thien Tan Nguyen – yosafat Sep 29 '16 at 08:50

C# Is it possible to testing if statement using immediate window in visual studio?

2 Answers2