Home Bookstore/E-Books P2P Programmer Forums Wrox Blogs Connect with Wrox Code Resources International IT Certifications Navigation Register Now View Active Topics View Archives View Unanswered Topics Wrox Programmer Forums In the online documentation for the TreeView.Find method, "null value" apparently means the integer value -1. It does not. Please post the code. http://bovbjerg.net/cannot-be/value-of-type-string-cannot-be-converted-to-system-web.php
Let's work to help developers, not make them feel stupid. hope this information helps you thanks -amit. Aug 13, 2007 Hi,I have developed a custom server control for .NET Framework 2.0. As all I see is an empty trimmed message!
Mea culpa. –User May 15 '09 at 20:28 1 Yep, now you're talking! :-) –marc_s May 15 '09 at 20:29 There is typo in your post that I please tell me how can i store null to db if there is no file attached. Hot Network Questions Are keywords in resolv.conf case sensitive? When you create parameters and pass the values to them you can perform the check (Hasvalue) and if its false assign DbNull.value to the stored proc param.
US Election results 2016: What went wrong with prediction models? Dbnull Vs Null Using the eval command twice What is the most someone can lose the popular vote by but still win the electoral college? Rate this: Please Sign up or sign in to vote. Thanks View 9 Replies View Related Msg 6522, Level 16, State 2, Line 1: System.InvalidCastException: Conversion From Type 'SqlBoolean' To Type 'Boolean' Is Not Val Mar 6, 2008 I created a
Value of type '1-dimensional array of byte' cannot be converted to 'system.security.cryptography.icryptotransform' cannot be converted to 1-dimensional array of Char HELP SOLVING Value of type '1-dimensional array of Byte' cannot be If the item is null or DBNull.Value, it will return an empty String. I am trying to use the DataView.Find method. you can use NullableTypes: http://nullabletypes.sourceforge.net/ bye (luKa) Nov 20 '05 #9 P: n/a Jay B.
This method or property cannot be called on Null values. Null for a DateTime is different from a Null for a bool). Dbnull To String How can I open the next/previous file alphabetically? Object Cannot Be Cast From Dbnull To Other Types. To me it seems to be a documentation fault. -- Armin Nov 20 '05 #8 P: n/a Luca Minudel Actually the .NET Framework don't let you set Null (Nothing in VB)
If you need to set Null (Nothing in VB) to an int, a bool, a DateTime, ... have a peek at these guys Parameter name: date Now, before you jump to conclusions - this error is occurring on reports with both parameters and no parameters (ie in reports that have no "date" parameter in I am trying to use the DataView.Find method. has nearly 8000 results. –Joe Frambach Apr 8 '13 at 14:47 Can you run the query SELECT AVG(exam)..
where Module_ID = nnn? I want to be able to use a strongly typed dataset and insert null values in DECIMAL, INT, VARCHAR, and DATETIME fields The example I have provided below of things I have They are both the same, the only difference is thelength of the string. check over here Member 94 Points 546 Posts Re: DBNULL Problem Feb 20, 2008 11:39 PM|milindsaraswala|LINK milindsaraswala thajeer You can check for the values to be null and set the parameter to DBNull.value if
that gets filled with an int. Is it possible to post a small sample where your issue is reproducible in order to investigate this further for you. So the exact error message I am receiving is this: [OLE DB Destination ] Error: There was an error with input column "TradeDate - derived" (645) on input "OLE DB Destination
VB.NET treats Nothing as the default value for any type.Hope this helpsJay "Luca Minudel"
Can anybody help me to solve this problem. Join them; it only takes a minute: Sign up DBnull to integer conversion error up vote 1 down vote favorite 1 I get the Conversion from type 'DBNull' to type 'Integer' WinGridCustomDataRowEdit.zip Reply Post Points: 25 [Infragistics]Hristo Points 48,496 Replied On: Wed, Dec 7 2011 9:37 AM Reply Hello, I am just checking about the progress of this issue. http://bovbjerg.net/cannot-be/type-of-conditional-expression-cannot-be-determined-dbnull.php I'm primarely a C# programmer so I made some confusion about Nothing in VB.
It's easy to fix, tried editing your post but got declined. –Shikyo Nov 13 '12 at 23:33 @Shikyo - i dont know y its not allowing to edit... –Pranay Similar topics me.refresh causes 'field cannot contain Null value' error ComboBox (Null value variable error) Data Entry Form - Index/Primary key null value how to send null value to an Integer Operating System Error 5(error Not Found). (Microsoft.Sql ADVERTISEMENT Unable To Cast Object Of Type 'System.DBNull' To Type 'System.Byte'. The former rounds to the nearest even value, while the explicit cast just truncates the value: stackoverflow.com/questions/1608801/… If possible, I would eliminate NULLs from the mix, using T-SQL ISNULL function –Jaime
Make a suggestion Dev centers Windows Office Visual Studio Microsoft Azure More... ujjwal uniyal 5-Jul-12 8:21am obj.Data=0 I tried using obj.data=Nothing but still there is error.. Which is consistent with other similar searching type methods found in the framework. Here it is! - Yes this help!
Can someone change accountNumber.TosString() to accountNumber.ToString() –Erik Kralj Jul 30 '13 at 11:31 @marc_s Depending on db/query layout, you need to check against either of them or even both. I'll be very thankfull to you. Thanks Jay "Luca Minudel"
You can use Dim scalarResult = avgCom.ExecuteScalar() If Convert.IsDBNull(scalarResult) then avgObject = 0 Else avgObject = Convert.toInt32(scalarResult) End If share|improve this answer edited Apr 8 '13 at 14:56 answered Apr 8 Solving a discrete equation OBDII across the world? Do you say just "I hurt" or do you actually take the time to describe your symptoms? #3 (permalink) April 16th, 2008, 05:32 AM humour Authorized User Join This marks your thread as Resolved and the community will know you have been helped." Reply vik20000in All-Star 17785 Points 3965 Posts Re: DBNULL Problem Feb 20, 2008 11:23 PM|vik20000in|LINK use
That solves the mystery. -TC "Jay B. by using ISNULL(your field, "") sql function , you can return empty string if the return value is null.