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nullable object must have a value
...nction might be converted to SQL that might not behave identically to your C# code. For instance, C#'s short-circuit evaluated && and || are converted to SQL's eager AND and OR. This can cause problems when you're checking for null in your lambda.
Example:
MyEnum? type = null;
Entities.Tab...
Why is access to the path denied?
... System.UnauthorizedAccessException: Access to the path is denied. because C# File.Move wants a file there, not just for the first parameter, but for the second too, and so if you put a directory as second parameter, it's trying to write a file like c:\crp when you have a directory called c:\crp.
t...
How to mark a class as Deprecated? [duplicate]
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Not the answer you're looking for? Browse other questions tagged c# .net oop deprecated or ask your own question.
Find and extract a number from a string
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This answer ist not complete (in C#). It is only getting the first number in the string. You have to itarate over the matches: resultString = string.Join(string.Empty, Regex.Matches(subjectString, @"\d+").OfType<Match>().Select(m => m.Value));
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Is there a way to include commas in CSV columns without breaking the formatting?
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Is there a C# library to parse csv files with quote-escaped fields?
– Minh Tran
Jan 29 '19 at 20:35
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Make a phone call programmatically
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If you are using Xamarin to develop an iOS application, here is the C# equivalent to make a phone call within your application:
string phoneNumber = "1231231234";
NSUrl url = new NSUrl(string.Format(@"telprompt://{0}", phoneNumber));
UIApplication.SharedApplication.OpenUrl(url);
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Filtering DataGridView without changing datasource
I'm developing user control in C# Visual Studio 2010 - a kind of "quick find" textbox for filtering datagridview. It should work for 3 types of datagridview datasources: DataTable, DataBinding and DataSet.
My problem is with filtering DataTable from DataSet object, which is displayed on DataGridView...
Regex: ignore case sensitivity
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C#
using System.Text.RegularExpressions;
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Regex.Match(
input: "Check This String",
pattern: "Regex Pattern",
options: RegexOptions.IgnoreCase)
specifically: options: RegexOptions.IgnoreCase
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Refreshing web page by WebDriver when waiting for specific condition
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Here is the slightly different C# version:
driver.Navigate().Refresh();
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How to get temporary folder for current user
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