How to capture disk usage percentage of a partition as an integer? twitter Tweets about "asp.net" Calendar <
only the IIF function Serenarules 2010-04-06 16:01:31 UTC #5 For future reference, you can look at the following cheat sheet. null : reader.GetInt32(genreIDIndex) }); share|improve this answer answered Mar 15 '12 at 12:37 kaj 3,3451915 4 you might need to add the code as reader.IsDBNull(movieGenreIDIndex) ? (int?)null : reader.GetInt32(movieGenreIDIndex) –akd asked 4 years ago viewed 5033 times active 4 years ago Upcoming Events 2016 Community Moderator Election ends Nov 22 Linked 3 Getting “no implicit conversion between '
asked 4 years ago viewed 23606 times active 3 years ago Upcoming Events 2016 Community Moderator Election ends Nov 22 Get the weekly newsletter! How can the US electoral college vote be so different to the popular vote? These CLR nullable types represent an instance of the Nullable structure. For more information on working with CLR nullable types in Visual Basic see Nullable Value Types (Visual Basic), and for C# see Using Nullable Types (C# Programming Guide).Nulls and Three-Valued LogicAllowing
Use the IsNull property to check for nulls.Null values can be assigned to a DataColumn as shown in the following code example. Related 1sproc using 'for xml' and then ExecuteXmlReader in C# -> “Data is Null. OBDII across the world? Isdbnull C# How can the US electoral college vote be so different to the popular vote?
This method or property can... Data Is Null This Method Or Property Cannot Be Called On Null Values Sql Server null : reader.GetInt32(movieGenreIDIndex), GenreID = reader.IsDBNull(genreIDIndex) ? If you consider the second to be a hack, you're best bet is to just write a utility function which performs the null check. –Nick Larsen♦ Oct 21 '10 at 12:55 anchor share|improve this answer answered Apr 18 '12 at 10:37 James 411 2 Can you show us this behind the scenes because I surely can't find it in mscorlib... –Robert Koritnik
What do I do? http://rinfix.com/cannot-be/value-close-cannot-be-called-while-doing-createhandle.html The opposite is true for a DataTable: a null value is implicit and the default value is explicit.All missing column values for rows read from XML input are assigned NULL. Here's a link to the manual page for this: IsNull MSDN reference Basically, you'll change your SQL text to look similar to this: "select IsNull(col2, ''), IsNull(col3, '') where col1 = Bug? Getstring Data Is Null. This Method Or Property Cannot Be Called On Null Values.
In the context of this quote, how many 'chips/sockets' do personal computers contain? How to capture disk usage percentage of a partition as an integer? A comparison can evaluate to one of three conditions:TrueFalseUnknownBecause null is considered to be unknown, two null values compared to each other are not considered to be equal. http://rinfix.com/cannot-be/tostring-in-java-lang-object-cannot-be-applied-to.html Is it possible to sheathe a katana as a free action?
data is null3Empty Textbox still saves data in SQL Server even columns in table are not allowed null0Data is Null This method or property cannot be called on Null values error Usually these problems are avoided using parameterized queries –Steve Feb 12 at 13:20 add a comment| Your Answer draft saved draft discarded Sign up or log in Sign up using My cat sat on my laptop, now the right side of my keyboard types the wrong characters Is it possible to sheathe a katana as a free action?
string returnValue = string1.Equals(string2).ToString(); return returnValue; } } The code produces the following output: Copy SqlString.Equals shared/static method: Two nulls=Null String.Equals instance method: Two nulls=True SqlString.Equals shared/static method: Two empty strings=True My cat sat on my laptop, now the right side of my keyboard types the wrong characters Is adding the ‘tbl’ prefix to table names really a problem? Unless you absolutely don't want to have a null string, this should work just fine: string myStr = (string)myObj; // string in a object disguise or a null share|improve this answer TSA broke a lock for which they have a master key.
Not the answer you're looking for? Does an Eldritch Knight's war magic allow Extra Attacks? This method or property cannot... http://rinfix.com/cannot-be/tostring-in-java-lang-object-cannot-be-applied-to-char.html How do I make an alien technology feel alien?
apple 6/17/2010 12:34:44 AM | Thanks for sharing. null : reader.GetString(Col2Index), reader.IsDbNull(Col3Index) ? Homework Help Math 1/30/2010 3:18:02 AM | While reading your blog it seems that you research on this topic very much. Browse other questions tagged c# sql-server null or ask your own question.
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The System.Data.SqlTypes namespace provides null semantics by implementing the INullable interface. String.Empty).ToString(); or String s = (myObjc ?? "").ToString() to be even more concise. The IsNull function for each SqlType returns a SqlBoolean and can be used to check for null values. to make it correct.