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Value Of Type System.dbnull Cannot Be Converted To Integer

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The problem is that stored procedure expects some data from this field. j = i; // Implicit conversion long k = i; // Implicit conversion long? Thanks, (luKa)-----Original Message-----Luca,??Did you have something to say? Dim parameterActivedate As SqlParameter = objCommand.Parameters.Add("@Activedate", SqlDbType.DateTime)parameterActivedate.Value = ""The error is:System.InvalidCastException: Conversion from string "" to type 'Date' is not valid. http://rinfix.com/cannot-be/value-of-type-string-cannot-be-converted-to-system-web.html

It's a different value and it is strong typed (i.e. Following is the way what i m using If Not dateOfBirth.HasValue Then dateOfBirth = DBNull.Value when i run application then it gives Server Error in '/Ddks' Application. Source Error: Line 88: Line 89: Line 90: If Not dateOfBirth.HasValue Then dateOfBirth = DBNull.ValueLine 91: If Not maritualStatus.HasValue Then maritualStatus = Convert.DBNullLine 92: If Not passportIssueDate.HasValue Then passportIssueDate = Convert.DBNull Member 94 Points 546 Posts Re: DBNULL Problem Feb 25, 2008 04:55 PM|milindsaraswala|LINK thajeer You will need to add a partial class to create a new method to support this requirement.

Dbnull To String

Browse other questions tagged c# reflection or ask your own question. I tried the verified answer, but it did not work for me. Sincerely,HristoDeveloper Support EngineerInfragistics, Inc.

values but no dice. Solving a discrete equation OBDII across the world? This is a simplified scenario: class TestClass { public long? They are both the same, the only difference is thelength of the string.

the answer - but I have tried and tried and tried to find it using seach and I cannot. Dbnull Vs Null If you need to set Null (Nothing in VB) to an int, a bool, a DateTime, ... at System.Security.CodeAccessSecurityEngine.Check(Object demand, StackCrawlMark& stackMark, Boolean isPermSet) at System.Security.PermissionSet.Demand() at System.Data.Common.DbConnectionOptions.DemandPermission() at System.Data.SqlClient.SqlConnection.PermissionDemand() at System.Data.SqlClient.SqlConnectionFactory.PermissionDemand(DbConnection outerConnection) at System.Data.ProviderBase.DbConnectionClosed.OpenConnection(DbConnection outerConnection,etc etc The action that failed was:DemandThe type of the first permission that But then I saw that you are probably talking about a database integer, what is a total different thing.

That method has an integer return type which contains the "index of the row in the DataView containing the sort key value specified; otherwise a null value if the sort key In the online documentation for the TreeView.Find method, "null value" apparently means the integer value -1. -TC Nov 20 '05 #6 P: n/a TC Jay, Thank you. Understand that English isn't everyone's first language so be lenient of bad spelling and grammar. Only variables declared as Object can either contain DBNull or a (boxed) Integer.

Dbnull Vs Null

In this case, we have to be clever enough to recognize what is meant by the word "Null". 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 Dbnull To String I bound my grid to a DataTable and I made sure to use a String column which does not allow DBNull and I am able to clear the contents of the Object Cannot Be Cast From Dbnull To Other Types. Terms of Service Layout: fixed | fluid CodeProject, 503-250 Ferrand Drive Toronto Ontario, M3C 3G8 Canada +1 416-849-8900 x 100 Developer Network Developer Network Developer :CreateViewProfileText: Sign in MSDN subscriptions Get

Then I changed it to Saturday (26th March) and it doesnt work. check my blog System.Data.SqlClient.SqlParameter oo = new System.Data.SqlClient.SqlParameter(); oo.Value = System.DBNull.Value; Where i can write this code in BLL itself or in code behind file. The server control has a property named BinaryData of type byte[]. The second stored procedure inserts data, but needs to insert the ClientID returned in the first stored procedure.

If you don't get the same results (my sample gives you the same error), then this is probably a bug in the version of the grid you are using and the Is it possible to hand start modern planes? Harlow [MVP - Outlook] Luca, I follow you, your other post was just a little terse, I missed what you were attempting to say. this content Privacy Statement| Terms of Use| Contact Us| Advertise With Us| CMS by Umbraco| Hosted on Microsoft Azure Feedback on ASP.NET| File Bugs| Support Lifecycle current community chat Stack Overflow Meta Stack

but i get logon failed. Scheduling a task into a period within a day, depending on whether or not it is a weekend Does an Eldritch Knight's war magic allow Extra Attacks? Weird One.

Null for a DateTime is different from a Null for a bool).

  1. it has been set to allow null values 2 solutions Top Rated Most Recent Rate this: Please Sign up or sign in to vote.
  2. The DBNull.Value would work for a SqlDataReader or a SqlParameter - but not for this object here. –marc_s May 15 '09 at 20:27 You're right, I started to optimize
  3. Error when a null value is read by the Reader see more linked questions… Related 2RowDataBound : Getting value from dataTable !
  4. So basically you are trying to convert "nothing" into a number.
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  6. WHAT I AM TRYING TO ACHIEVE Allow users to enter a grid (gridClaimItem) cell (known as the "Rider" column) and delete the existing value (example - cell contains "Test" as the
  7. I am waiting for your details.
  8. WinGridCustomDataRowEdit.zip Reply Post Points: 25 All Replies [Infragistics]Hristo Points 48,496 Replied On: Tue, Nov 29 2011 9:19 AM Reply Hello , What is the exactly version of Infragistics you are

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 more stack exchange communities company blog Stack Exchange Inbox Reputation and Badges sign up log in tour help Tour Start here for a quick overview of the site Help Center Detailed l = i; // Implicit conversion But going the other way around doesn't work, because no implicit conversion exist to pass a null to a non-null: int? System.Data.SqlClient.SqlParameter oo = new System.Data.SqlClient.SqlParameter(); oo.Value = System.DBNull.Value;

HTH Thajeer "Dont forget to click "Mark as Answer" on the post that helped you.

ujjwal uniyal 5-Jul-12 8:43am oke.. @amitgajjar 5-Jul-12 8:51am use SqlBinary.Null instead of DBNull.Value @amitgajjar 5-Jul-12 9:21am have you used System.Data.SqlTypes.SqlBinary.Null for inserting null value ? I'm primarely a C# programmer so I made some confusion about Nothing in VB. Thanks View 1 Replies View Related DBNULL Error - SQL Server2000/ASP.NET Jul 20, 2005 Dear GroupI'm having a very weird problem. http://rinfix.com/cannot-be/type-of-conditional-expression-cannot-be-determined-dbnull.html Data is of type byte() amitgajjar 5-Jul-12 8:28am your database field should allow null.

Null for a DateTime is different from a Null for a bool). This marks your thread as Resolved and the community will know you have been helped." Reply milindsarasw... The column status returned was: "The value could not be converted because of a potential loss of data.". I am deployng web application on production server as well as Databse also.

One of the fields in my textfile contains the value '0' or a date. It seems that the problem arises from incorrect/ambiguous syntax in the VB.NET documentation. Value { get; set; } } [TestMethod] public void TestMethod2() { TestClass obj = new TestClass(); Type t = obj.GetType(); PropertyInfo info = t.GetProperty("Value"); int v = 1; // This works Aug 31, 2004 Hi There,I'm using C# to get a value for a DOUBLE precision variable, called "Length", from a textBox using the following line:Length = Convert.ToDouble( txtLength.Text )I'm also using