Search results
To check if variable is null or empty use this: IF LEN(ISNULL(@var, '')) = 0 -- Is empty or NULL ELSE -- Is not empty and is not NULL
A null is neither an empty string (for character or datetime data types) nor a zero value (for numeric data types). The ANSI SQL-92 specification states that a null must be the same for all data types, so that all nulls are handled consistently. The System.Data.SqlTypes namespace provides null semantics by implementing the INullable interface.
Indicates whether the specified string is null or an empty string (""). public: static bool IsNullOrEmpty(System::String ^ value); public static bool IsNullOrEmpty (string value);
16 lut 2024 · Check if a String Is Empty or Null in C#. If we want to check for a string that has either null value or "" value in it, we can use the string.IsNullOrEmpty() method in C#. The string.IsNullOrEmpty() method has a boolean return type. It returns true if the string is either empty or null.
27 mar 2013 · public string NonBlankValueOf(string strTestString) { if (String.IsNullOrEmpty(strTestString)) return "0"; else return strTestString; } and use it like: FooTextBox.Text = NonBlankValueOf(strFoo);
9 lut 2009 · Handling the Issue of NULL and Empty Values. Then let’s try to handle the record having the NULL value and set as a new value the string “NewValue” for the result set of our select statement. SQL Server provides 2 functions for doing this; (i) the ISNULL; and (ii) the COALESCE.
28 kwi 2022 · The standard solution to determine whether a string is empty or null is using the String.IsNullOrEmpty() method. It returns true if the specified string is null or an empty string; otherwise, false .
