Can’t use System.Windows.Forms
A console application does not automatically add a reference to System.Windows.Forms.dll. Right-click your project in Solution Explorer and select Add reference… and then find System.Windows.Forms and add it.
c#
MSHTML DLL on Windows 10
I just created a blog post on this issue. The problem is that the Microsoft.mshtml.dll assembly in the Global Assembly Cache becomes unregistered from ActiveX during the upgrade process. To fix this issue, it is necessary to run “regasm” on the assembly: Open an instance of “Developer Command Prompt for VS2013” (or whatever version of Visual Studio … Read more
MSHTML DLL on Windows 10
I just created a blog post on this issue. The problem is that the Microsoft.mshtml.dll assembly in the Global Assembly Cache becomes unregistered from ActiveX during the upgrade process. To fix this issue, it is necessary to run “regasm” on the assembly: Open an instance of “Developer Command Prompt for VS2013” (or whatever version of Visual Studio … Read more
C# compiler error: “not all code paths return a value”
You’re missing a return statement. When the compiler looks at your code, it’s sees a third path (the else you didn’t code for) that could occur but doesn’t return a value. Hence not all code paths return a value. For my suggested fix, I put a return after your loop ends. The other obvious spot – adding an else that had a return value to the if-else-if – … Read more
How to Use TextureBrush for painting an Image
how to locally refer to the image (it is set to always copy) You can add the image to a resource file and then reference that Image from there within the code. (See link http://msdn.microsoft.com/en-us/library/7k989cfy%28v=vs.90%29.aspx) How to get the image centered in the square, and how to keep the image stationary when the square moves? This … Read more
How to Use TextureBrush for painting an Image
how to locally refer to the image (it is set to always copy) You can add the image to a resource file and then reference that Image from there within the code. (See link http://msdn.microsoft.com/en-us/library/7k989cfy%28v=vs.90%29.aspx) How to get the image centered in the square, and how to keep the image stationary when the square moves? This … Read more
Extension methods must be defined in a non-generic static class
change to Following points need to be considered when creating an extension method: The class which defines an extension method must be non-generic, static and non-nested Every extension method must be a static method The first parameter of the extension method should use the this keyword.
C# Gridview CheckBox Field VS (Template Field + CheckBox)
CheckBox Field:must bound to a field of database and is read only. CheckBox in Template Field: Can use as a rocord selector. Sample with template field: ASPX: Code behind:
HttpWebRequest-The remote server returned an error: (400) Bad Request
Are you sure you should be using POST not PUT? POST is usually used with application/x-www-urlencoded formats. If you are using a REST API, you should maybe be using PUT? If you are uploading a file you probably need to use multipart/form-data. Not always, but usually, that is the right thing to do.. Also you don’t seem to … Read more
What is the best way to implement a “timer”?
Use the Timer class. The Elapsed event will be raised every X amount of milliseconds, specified by the Interval property on the Timer object. It will call the Event Handler method you specify. In the example above, it is OnTimedEvent.