Watts Kendall

Watts Kendall


Deploy solidity contract with c#

I am developing an application on Ethereum blockchain. I use Solidity for contract and Nethereum c# library to connect to the contract. I am somehow new in Ethereum and it is my first app in blockchain!! I want to deploy my app in one TESTChain first,

The problem is that The C# code does not reply anything after send request for deploying of contract. here is my code

the contract is created well on remix and in running tab it works

  public class DeploymentTest : ContractDeploymentMessage
      public static string BYTECODE = @"0x....";// removed it because of long string
  public DeploymentTest() : base(BYTECODE) { }

  public async Task ConnectToTest()
            var url = "https://github.com/Nethereum/TestChains";
            var pass = "0xb5b1870957d373ef0eeffecc6e4812c0fd08f554b37b233526acc331bf1544f7";
            var acc = new Account(pass);
            var chain = new Web3(acc, url);
            var deploymentMessage = new DeploymentTest();
            var deploymentHandler =  chain.Eth.GetContractDeploymentHandler<DeploymentTest>();

             // this point just waited and does not return anything
            var transactionReceipt = await deploymentHandler.SendRequestAndWaitForReceiptAsync(deploymentMessage);
            var contractAddress = transactionReceipt.ContractAddress;


Can any one help me, I don’t insist in deploying with code, it can be happened by anyway but after deploying I need to connect it and call some functions. Thanks


I downloaded the TESTChain network for windows and it works fine, it seems the default port is 8545 for http:localhost. but it still does not connect to chain

    var web3test = new Web3(); // also tried new Web3(http://localhost:8545);
var isMining = await web3test.Eth.Mining.IsMining.SendRequestAsync();
var accounts = await web3test.Eth.Accounts.SendRequestAsync();

is that problem with my connection? I disabled my MacAfee firewall completely.


I changed my machine and it works on my another laptop, I cannot find the problem. I do not know if I just Uninstall the mcaffe will it be ok or not? has anybody any idea about the firewall prolems or other issues?

#blockchain #solidity #altcoins

What is GEEK

Buddha Community

Randy Rickards



I found the problem , it was in my c# code The function which calls the code was on the wait,

TestConnection().wait(); // this is not proper 

so I changed it to TestConnection(); and it works

Tamale  Moses

Tamale Moses


How to Run C/C++ in Sublime Text?

C and C++ are the most powerful programming language in the world. Most of the super fast and complex libraries and algorithms are written in C or C++. Most powerful Kernel programs are also written in C. So, there is no way to skip it.

In programming competitions, most programmers prefer to write code in C or C++. Tourist is considered the worlds top programming contestant of all ages who write code in C++.

During programming competitions, programmers prefer to use a lightweight editor to focus on coding and algorithm designing. VimSublime Text, and Notepad++ are the most common editors for us. Apart from the competition, many software developers and professionals love to use Sublime Text just because of its flexibility.

I have discussed the steps we need to complete in this blog post before running a C/C++ code in Sublime Text. We will take the inputs from an input file and print outputs to an output file without using freopen file related functions in C/C++.

#cpp #c #c-programming #sublimetext #c++ #c/c++

Dicey Issues in C/C++

If you are familiar with C/C++then you must have come across some unusual things and if you haven’t, then you are about to. The below codes are checked twice before adding, so feel free to share this article with your friends. The following displays some of the issues:

  1. Using multiple variables in the print function
  2. Comparing Signed integer with unsigned integer
  3. Putting a semicolon at the end of the loop statement
  4. C preprocessor doesn’t need a semicolon
  5. Size of the string matters
  6. Macros and equations aren’t good friends
  7. Never compare Floating data type with double data type
  8. Arrays have a boundary
  9. Character constants are different from string literals
  10. Difference between single(=) and double(==) equal signs.

The below code generates no error since a print function can take any number of inputs but creates a mismatch with the variables. The print function is used to display characters, strings, integers, float, octal, and hexadecimal values onto the output screen. The format specifier is used to display the value of a variable.

  1. %d indicates Integer Format Specifier
  2. %f indicates Float Format Specifier
  3. %c indicates Character Format Specifier
  4. %s indicates String Format Specifier
  5. %u indicates Unsigned Integer Format Specifier
  6. %ld indicates Long Int Format Specifier

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A signed integer is a 32-bit datum that encodes an integer in the range [-2147483648 to 2147483647]. An unsigned integer is a 32-bit datum that encodes a non-negative integer in the range [0 to 4294967295]. The signed integer is represented in twos-complement notation. In the below code the signed integer will be converted to the maximum unsigned integer then compared with the unsigned integer.

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#problems-with-c #dicey-issues-in-c #c-programming #c++ #c #cplusplus

Ari  Bogisich

Ari Bogisich


Loops in C++ | For, While, and Do While Loops in C++

In this Video We are going to see how to use Loops in C++. We will see How to use For, While, and Do While Loops in C++.
C++ is general purpose, compiled, object-oriented programming language and its concepts served as the basis for several other languages such as Java, Python, Ruby, Perl etc.

#c #c# #c++ #programming-c

Ari  Bogisich

Ari Bogisich


Using isdigit() in C/C++

In this article, we’ll take a look at using the isdigit() function in C/C++. This is a very simple way to check if any value is a digit or not. Let’s look at how to use this function, using some simple examples.

#c programming #c++ #c #c#

Shaylee  Lemke

Shaylee Lemke


Object Oriented Programming in C++ | C++ OOPs Concepts | Learn Object Oriented C++

C++ is general purpose, compiled, object-oriented programming language and its concepts served as the basis for several other languages such as Java, Python, Ruby, Perl etc.

The goal of this course is to provide you with a working knowledge of C++. We’ll start with the basics, including syntax, operators, loops, and functions. This Course will explain you how to use data structures and create your own Functions. This Course will show you the details of the powerful object and template systems so you can create useful classes and objects.

Youtube channel: ProgrammingKnowledge - https://www.youtube.com/watch?v=_SH1T3y_D7o

#c #c# #c++ #programming-c