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C# datareadeer return null
“C# datareadeer return null” Code Answer
C# datareadeer return null
csharp by
Powerful Penguin
on May 26 2020
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// ****** Use MySqlDataReader instead of SqlReader if you are using MySQL ******* //You need to check for IsDBNull: //That's your only reliable way to detect and handle this situation. //I wrapped those things into extension methods and tend to return a default value //if the column is indeed null: public static string SafeGetString(this SqlDataReader reader, int colIndex) { if(!reader.IsDBNull(colIndex)) return reader.GetString(colIndex); return string.Empty; } //Now you can call it like this: employee.FirstName = SqlReader.SafeGetString(indexFirstName); // and you'll never have to worry about an exception or a null value again.
Source:
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