C# – The name ‘loginrand’ does not exist in the current context

cnet

i just try to create bot for travian , i find some login code

        //download html 
        WebClient client = new WebClient();
        client.Encoding = System.Text.Encoding.UTF8;
        string source = client.DownloadString(@"Http://" + server + "/login.php");
        source = source.Replace("\"", "");

        //search for user

        Regex rloginName = new Regex(@"name=login value=\w*");
        Match mloginName = rloginName.Match(source);
        if (mloginName.Success)
        {
            string loginName = mloginName.ToString().Replace(@"name=login value=", "");
        }

        //search for pass

        Regex rloginPassword = new Regex(@"type=password name=\w*");
        Match mloginPassword = rloginPassword.Match(source);
        if (mloginPassword.Success)
        {
            string loginPassword = mloginPassword.ToString().Replace(@"type=password name=", "");
        }

        Regex rloginUsername = new Regex(@"input class=fm fm110 type=text name=\w*");
        Match mloginUsername = rloginUsername.Match(source);
        if (mloginUsername.Success)
        {
            string loginUsername = mloginUsername.ToString().Replace(@"input class=fm fm110 type=text name=", "");
        }
        Regex rloginRand = new Regex(@"<p align=center><input type=hidden name=\w*");
        Match mloginRand = rloginRand.Match(source);
        if (mloginRand.Success)
        {
            string loginrand = mloginRand.ToString().Replace("<p align=center><input type=hidden name=", "");
        }

        string postString = @"w=1024:768&login=" + loginName + "&" + loginUsername + "=" + user + "&" + loginPassword + "=" + pass + "&" + loginrand + "=&s1.x=10&s1.y=10&s1=login";


        WebRequest req = WebRequest.Create(@"http://" + server + "/dorf1.php");
        req.ContentType = "application/x-www-form-urlencoded";
        req.Method = "POST";
        byte[] bytes = System.Text.Encoding.ASCII.GetBytes(postString);
        req.ContentLength = bytes.Length;
        req.ContentLength = bytes.Length;
        Stream os = req.GetRequestStream();
        os.Write(bytes, 0, bytes.Length);
        os.Close();
        WebResponse resp = req.GetResponse();
        StreamReader sr = new StreamReader(resp.GetResponseStream());

but when i try to run i see this error ,

Form1.cs(67,144): error CS0103: The name 'loginrand' does not exist in the current context
error CS0103: The name 'loginPassword' does not exist in the current context
error CS0103: The name 'loginUsername' does not exist in the current context
error CS0103: The name 'loginName' does not exist in the current context

can some one help

string loginrand;
if (mloginRand.Success)
{
loginrand = mloginRand.ToString().Replace("

but nothing change 🙁

------ Build started: Project: travian-ah, Configuration: Debug Any
CPU ——
C:\WINDOWS\Microsoft.NET\Framework\v2.0.50727\Csc.exe
/noconfig /nowarn:1701,1702
/errorreport:prompt /warn:4
/define:DEBUG;TRACE
/reference:C:\WINDOWS\Microsoft.NET\Framework\v2.0.50727\System.Data.dll
/reference:C:\WINDOWS\Microsoft.NET\Framework\v2.0.50727\System.Deployment.dll
/reference:C:\WINDOWS\Microsoft.NET\Framework\v2.0.50727\System.dll
/reference:C:\WINDOWS\Microsoft.NET\Framework\v2.0.50727\System.Drawing.dll
/reference:C:\WINDOWS\Microsoft.NET\Framework\v2.0.50727\System.Windows.Forms.dll
/reference:C:\WINDOWS\Microsoft.NET\Framework\v2.0.50727\System.Xml.dll
/debug+ /debug:full /optimize-
/out:obj\Debug\travian-ah.exe
/resource:obj\Debug\travian_ah.Form1.resources
/resource:obj\Debug\travian_ah.Properties.Resources.resources
/target:winexe Form1.cs
Form1.Designer.cs Program.cs
Properties\AssemblyInfo.cs
Properties\Resources.Designer.cs
Properties\Settings.Designer.cs
C:\Documents and Settings\My
Documents\Visual Studio
2005\Projects\travian-ah\travian-ah\Form1.cs(33,64):
error CS0165: Use of unassigned local
variable 'server' C:\Documents and
Settings\My Documents\Visual Studio
2005\Projects\travian-ah\travian-ah\Form1.cs(70,56):
error CS0165: Use of unassigned local
variable 'loginName' C:\Documents and
Settings\My Documents\Visual Studio
2005\Projects\travian-ah\travian-ah\Form1.cs(70,74):
error CS0165: Use of unassigned local
variable 'loginUsername' C:\Documents
and Settings\My Documents\Visual
Studio
2005\Projects\travian-ah\travian-ah\Form1.cs(70,96):
error CS0165: Use of unassigned local
variable 'user' C:\Documents and
Settings\My Documents\Visual Studio
2005\Projects\travian-ah\travian-ah\Form1.cs(70,109):
error CS0165: Use of unassigned local
variable 'loginPassword' C:\Documents
and Settings\My Documents\Visual
Studio
2005\Projects\travian-ah\travian-ah\Form1.cs(70,131):
error CS0165: Use of unassigned local
variable 'pass' C:\Documents and
Settings\My Documents\Visual Studio
2005\Projects\travian-ah\travian-ah\Form1.cs(70,144):
error CS0165: Use of unassigned local
variable 'loginrand'

Best Answer

Don't be annoying and create bots for an online game.
Learn about variable scoping, declaring a variable in an if statement means that variable isn't available outside of it.

For example:

if (mloginPassword.Success)
{
    // variable defined here
    string loginPassword = 
        mloginPassword.ToString().Replace(@"type=password name=", "");
}
// variable not available here

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C# – What does the [Flags] Enum Attribute mean in C#

The [Flags] attribute should be used whenever the enumerable represents a collection of possible values, rather than a single value. Such collections are often used with bitwise operators, for example:

var allowedColors = MyColor.Red | MyColor.Green | MyColor.Blue;

Note that the [Flags] attribute doesn't enable this by itself - all it does is allow a nice representation by the .ToString() method:

enum Suits { Spades = 1, Clubs = 2, Diamonds = 4, Hearts = 8 }
[Flags] enum SuitsFlags { Spades = 1, Clubs = 2, Diamonds = 4, Hearts = 8 }

...

var str1 = (Suits.Spades | Suits.Diamonds).ToString();
           // "5"
var str2 = (SuitsFlags.Spades | SuitsFlags.Diamonds).ToString();
           // "Spades, Diamonds"

It is also important to note that [Flags] does not automatically make the enum values powers of two. If you omit the numeric values, the enum will not work as one might expect in bitwise operations, because by default the values start with 0 and increment.

Incorrect declaration:

[Flags]
public enum MyColors
{
    Yellow,  // 0
    Green,   // 1
    Red,     // 2
    Blue     // 3
}

The values, if declared this way, will be Yellow = 0, Green = 1, Red = 2, Blue = 3. This will render it useless as flags.

Here's an example of a correct declaration:

[Flags]
public enum MyColors
{
    Yellow = 1,
    Green = 2,
    Red = 4,
    Blue = 8
}

To retrieve the distinct values in your property, one can do this:

if (myProperties.AllowedColors.HasFlag(MyColor.Yellow))
{
    // Yellow is allowed...
}

or prior to .NET 4:

if((myProperties.AllowedColors & MyColor.Yellow) == MyColor.Yellow)
{
    // Yellow is allowed...
}

if((myProperties.AllowedColors & MyColor.Green) == MyColor.Green)
{
    // Green is allowed...
}

Under the covers

This works because you used powers of two in your enumeration. Under the covers, your enumeration values look like this in binary ones and zeros:

 Yellow: 00000001
 Green:  00000010
 Red:    00000100
 Blue:   00001000

Similarly, after you've set your property AllowedColors to Red, Green and Blue using the binary bitwise OR | operator, AllowedColors looks like this:

myProperties.AllowedColors: 00001110

So when you retrieve the value you are actually performing bitwise AND & on the values:

myProperties.AllowedColors: 00001110
             MyColor.Green: 00000010
             -----------------------
                            00000010 // Hey, this is the same as MyColor.Green!

The None = 0 value

And regarding the use of 0 in your enumeration, quoting from MSDN:

[Flags]
public enum MyColors
{
    None = 0,
    ....
}

Use None as the name of the flag enumerated constant whose value is zero. You cannot use the None enumerated constant in a bitwise AND operation to test for a flag because the result is always zero. However, you can perform a logical, not a bitwise, comparison between the numeric value and the None enumerated constant to determine whether any bits in the numeric value are set.

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C# – The name ‘ConfigurationManager’ does not exist in the current context

It's not only necessary to use the namespace System.Configuration. You have also to add the reference to the assembly System.Configuration.dll , by

Right-click on the References / Dependencies
Choose Add Reference
Find and add System.Configuration.

This will work for sure. Also for the NameValueCollection you have to write:

using System.Collections.Specialized;

Best Answer

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C# – What does the [Flags] Enum Attribute mean in C#

C# – The name ‘ConfigurationManager’ does not exist in the current context

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