In this article, we are going to see, step by step, how we can connect to SQL Server from a Visual C++ program using an ODBC connection. Prior to start reading, if you are really interested in learning Programming, then you should definitely check my 6-hour online course, “The Philosophy and Fundamentals of Computer Programming“. … Read more…
When working with Inheritance in C#, under certain circumstances, you might get an error message similar to this: There is no argument given that corresponds to the required formal parameter. Don’t worry, the above error can be easily resolved. Let’s see a full example, by first reproducing the error. Reproducing the Error Message Consider … Read more…
Writing to a text file from a C++ Program is very easy. In this example, which is part of my online course on Udemy titled “The Philosophy and Fundamentals of Computer Programming“, I will show you step by step, how to write to a text file from a sample C++ program that generates an array … Read more…
C# SqlParameter is a handy feature allows you to safely pass a parameter to a SqlCommand object in .NET. A security best practice when writing .NET data access code, is to always use parameters in SqlCommand objects (whenever parameters are required of course). The reason for this, is that parameters help prevent SQL injection attacks. … Read more…
This is a basic example on how to establish a connection to SQL Server from a C# program with the use of the “using” statement in C# which help you better managing your database connections. Using the System.Data.SqlClient Use the System.Data.SqlClient namespace in the top section of your code as below: using System.Data.SqlClient; Setting … Read more…
When developing a .NET application (i.e. in C#), under certain circumstances, you might get the error message: Cannot implicitly convert type ‘string’ to ‘System.Windows.Forms.DataGridViewTextBoxColumn Example of Exception in Visual Studio when Using the Reserved Word “Name” as a DataGridView Column Name. Why you got the implicit conversion error If you get the above error, … Read more…
If you are working with .NET applications, at some time you might get the below (or similar) error message: Timeout expired. The timeout period elapsed prior to obtaining a connection from the pool. This may have occurred because all pooled connections were in use and max pool size was reached. Why you get the connection … Read more…
There are many times when we develop C# applications, where we make use of several forms. To this end, there are times that we are using the Hide() method for some of these forms thus hiding the forms, but not closing or disposing them. Nevertheless, in the main form of a program we usually make … Read more…
Open the C# project properties. In the “Application” tab set the Startup object to “WindowsFormsApplication1.Program”. The “WindowsFormsApplication1” reflects the name of your current C# project so it could be different than the project name presented here. Then in the solution explorer, under the project tree, open the “Program.cs” file. The code should be similar as … Read more…
