Detecting Null Variables in an if statement c#

[DragonLord]

I want to know how you find out if a variable contains an null value in c#

I know for the string you have the string.isnullorempty

but what about integer etc... is there somewhere i can look to find all the possible functions to call for each datatype?

[r035198x]

I want to know how you find out if a variable contains an null value in c#

I know for the string you have the string.isnullorempty

but what about integer etc... is there somewhere i can look to find all the possible functions to call for each datatype?

if(variable == null) {
//
}

[DragonLord]

if(variable == null) {
//
}

How about in C#?? I get an error if I do that saying that it can't ever be null as in the case of an integer, but if it is coming from a database that isn't always true..

[nateraaaa]

You will need to check for System.DBNull if you are checking to see if a database value is null in your C# code.

if(row["columnname"] != System.DBNull.Value)
{
//proceed
}
else
{
//value is null. Handle this.
}

Nathan