ADO.NET :: Getting The Error As "Cannot Set Column 'column Name' To Be Null

Jan 15, 2011

I am using VS 2010, C# and Sql server 2008. I am having a list returned from the database. I am trying to convert the

list to a dataset.

I am getting the error as "Cannot set column 'column name' to be null. use DBNull instead.

This is the code i have used:


How to fix this?

View 1 Replies

Similar Messages:

SQL Server :: Update Column Into Identity Column By Removing Null Values?

Aug 10, 2010

I have a table converted from Access and the identity keys were lost. Now I need to make the id column the identity column, but it already has a lot of null values, how do I auto generate integer values for the null rows? The row ids are incremented, so if there is a way to auto increment the ids

View 7 Replies

Forms Data Controls :: Making Visible Of Gridviwe Column If All Values In Selected In A Column Is Not Null

Dec 30, 2010

I have gridviwe having 2 columns:

1) DocNumber 2)Title

query select docnumber,title from tbl_docs.


Now the issue is that that every document doesn't has document number. I want to make invisible the docuNumber column of the grid viwe if all values in the docNumber retrieved are null.for example:

docnumber tite
null Document 1

null Document 2

null doucment 3

null document 4

if returned result match above where all docnumber are null then make the gridviwe docnumber column ivisible eslemake the greidviwe column visible.

View 4 Replies

ADO.NET :: Error - Cannot Insert The Value NULL Into Column 'Cid

Nov 28, 2010

I have a table called category that has tow attribute (Cid,Name)

what can i do to insert category name only without allow user to insert category id in my webpage, I use view detail control and make the wizard link but when run the error message appear (Cannot insert the value NULL into column 'Cid)

note the identity properties is not pass.

View 2 Replies

Error - Cannot Insert The Value NULL Into Column 'Vid'

Dec 9, 2010

I have two table with a one to many relation.

1- voteChoose has (Choid PK,Choose,Vid)

2-VoteQuestion has(Vid PK,Vquestion,Action)

so when insert a question and answer in a page this error message (

Cannot insert the value NULL into column 'Vid') appears

i use this function to add vote

public void AddVote(string VQuestion, string[] Choose)

View 6 Replies

Databases :: Int) FaultsGroup Is 0 Or 1 But Always Get This Error: Column 'FaultGroup' Cannot Be Null?

Feb 23, 2010

(int) faultsGroup is 0 or 1 but i always get this error: Column 'FaultGroup' cannot be null Does anyone tell me why? Syntax looks ok.


View 2 Replies

Forms Data Controls :: Sorting A Column By Simply Clicking On The Column Rather Than Clicking On The Column Header?

Jan 14, 2010

I am looking to sort a column on my gridview by simply clicking on the column rather than clicking on the column header. In the design I have been given, the column header will not be shown, and I need to be able to give the user to sort this column, by simply just clicking any where on the column.

View 2 Replies

MVC :: Cannot Insert The Value NULL Into Column

Jul 19, 2010


Cannot insert the value NULL into column?

View 3 Replies

SQL Server :: How To Copy One Column Data From A Table To Another Table Column With Rest Of The Column

Jan 16, 2011

I want to copy data from a table[tblExcel][No.of columns:2] to another table[ev_event] which has 5 columns, 2 columns from the another table, 3 columns from user defined value


View 4 Replies

Update Nullable Column In Db To Null?

Sep 13, 2010

Can anyone reliably get the EDS to save a nullable column to the databse as a "null" when bound to any of the controls such as "FormView"?I have tried using several different UpdateParameters (Session, ControlParamater, Parameter, etc). I have tried setting "ConvertEmptyStringToNull" to true and leaving the property off entirely. Nothing works. On my "Inserts" it works fine.(I have made sure the column is set to nullable = true in the Entity Designer.....)

View 7 Replies

Databases :: MySqlException: Column Cannot Be Null?

Jan 11, 2010

I'm writing a function in "Query Browser" to add some values to a table.

The function should get this value when the stored procedure is called upon, thus te code looks like:

INSERT INTO customer(customer_name, customer_city) VALUES (@customer_name, @customer_city);

But when trying to execute the function, it says "customer_name can't be null"

i thought maybe it just waiting for the values to be sent from .aspx page, but yet again, i get the same error message.

View 3 Replies

Access :: Return The Column Name For Row With Last Non-null Value?

May 28, 2010

I have a Table, which contains a list of league players. Each season, we record their Points per Dart. Their total PPD for that season is stored in other tables and extracted through other queries, which in turn are imported to the master table "Player History" at the end of the season for use as historical data.

The current query retrieves each players PPD for each season they played, when they played last, and how many seasons played.

The code for Last season Played has become too long and unstable to use. it was originally created, and split into two separate columns because a single SQL was to long. (LSP1) and LSP2) which work, but as I add seasons, Access does not like the length of code.

In short, i need to find a more simple code that will look at each row, and look in that row for the last non null cell and report which column that last non null value is in.

So if a player played seasons 30 & 31, but did not play 32..but did play 33, the Column with the code should be titled Last Season Played, and for that Player, it would state "33" in that cell, indicating that this player last played season "33"

View 2 Replies

SQL Server :: Column Has NULL Value Not Being Handled?

Nov 22, 2010

I thought I had this down. Why isn't my code handling this? It starts writing rows and it gets to the NULL row and then it chokes because the value in the cell is null. I said in the code when it sees the null to assign "". See last line.


View 1 Replies

Web Forms :: How To Insert Null Value In Image Column

Feb 11, 2010

how can insert null value in image column.i using sql server 2005 and in my database i have column image and datafield id image.when i browse a image and insert it then it is working but when i insert it without image then it is not error ocure-Operand type clash: nvarchar is incompatible with image.



View 8 Replies

DataSource Controls :: Identify Row Of A Column Contains Null Value

Apr 9, 2010

having a table with column having null values

how to identify row of a column contains null value?

i tried isnull,nullif properties but such functions im getting emptied rows

View 4 Replies

C# - NLog - Write NULL To Optional Database Column

Jan 28, 2011

I am using NLog for logging in an ASP.Net application and making use of the database target with Microsoft Sql Server.I have some logging parameters that are optional and not always specified. I would like these to be written as null when they are not provided, however NLog seems to always write them as empty strings.

Is there a way to configure it to write null as the default?


View 2 Replies

DataSource Controls :: Inserting Null In Smalldatetime Column?

Mar 8, 2010

i want to insert null in smalldatetime column, when user doesn't select any date from the calender control i want to insert null in the databse, i am using typed dataset in my application.

here's my code


it gives me the exception "SqlDateTime overflow. Must be between 1/1/1753 12:00:00 AM and 12/31/9999 11:59:59 PM."

View 1 Replies

ADO.NET :: EF 4 DetailsView And EntityDataSource: Cannot Insert The Value NULL Into Column 'PasswordHash'

Mar 16, 2011

I setup a very simple example using a DetailsView and an EF Model with Contact, Individual, and Customer from the AdventureWorks database (2008). Viewing, Editing, and Deleting work just fine. However, I'm getting the error when I try to create a new Contact.

Here are the relevant code snippets:


I get the dreaded error:

Cannot insert the value NULL into column 'PasswordHash', table 'C1AdventureWorks.Person.Contact'; column does not allow nulls. INSERT fails.

I've monkeyed around with the StoreGeneratedPattern="Computed" and DefaultValue="0" for the PasswordHash property in the Contact entity as well, but it didn't .

View 4 Replies

DataSource Controls :: Null Value Entry In Numeric Column

Apr 8, 2010

how can i insert 'null' value in numeric column if no record is there.when i pass record to BLL like

MyCollegeAddmissionMst.GraduationYear = IIf(txtGrdyear.Text = String.Empty,
"", txtGrdyear.Text.Trim())

datatype is numeric(4,0) then error is Conversion from string "" to type 'Integer' is not valid. no record is in this textbox and i need to entry null how can i do the same.

View 27 Replies

Forms Data Controls :: GridView Null Column Value?

Nov 9, 2010

I take a gridview on my web form ,In one column i display image & view link.My prob is that when any row has not image then do not show view link.

View 7 Replies

DataSource Controls :: How To Pass Null Value Into Varbinary(max) Column N To By Table

Feb 14, 2010

i want to pass null value into varbinary(max) column n to by table

if i do like this i have this function in my app_code .vb class

Public Function Remove_Attachment(ByVal Id As Integer) As Integer
Dim db As New dbAccess
db.commandText = "SP_RemoveAtt_DML"
db.commandType = CommandType.StoredProcedure
db.addParameter("@InOutVal_Id", Id)
db.addParameter("@Document", System.Data.SqlTypes.SqlBinary.Null.Value)
Catch ex As Exception
Throw ex
End Try
End Function

i got this error. Data is Null. This method or property cannot be called on Null values.

View 4 Replies

Implications Of Changing Column From Not Null To Nullable In Entity Framework?

Apr 1, 2011

I have to change the username column in my database to nullable, which means everywhere in my code, I now have to check username.HasValue and change references to username to username.Value. Is there anything I can do to avoid having to change all the references to username to username.Value?

View 1 Replies

Forms Data Controls :: Cannot Insert The Value NULL Into Column 'UniqueID'

Jan 18, 2011

so i have a FormView bound to an SQL datasource.

Using the Auto generated insert/update/delete. "Cannot insert the value NULL into column 'UniqueID'"

The FormView Default view = Edit

I have set the PKey and the Datasource is loading the record from a session. The record is loading no problem, just wont update.

View 4 Replies

Forms Data Controls :: Display Null If Column Is Empty

Sep 10, 2010

is it possible to display Null. if my sql data is null while binding it with gridview in



for example like this


View 5 Replies

DataSource Controls :: Passing Null Values For Date Column In C#?

Jul 7, 2010

I have req where i have to check the value coming from db is null or not and assign value according to that.Problem here is the field datatype is 'Datetime' so all the time when I tried to use the below line of code its giving me error.How can I pass a null value to datetimefield if value coming from db is null.

(reader["FieldName"] == DBNull.Value) ? string.Empty : (DateTime?)(reader["FieldName"]);

I came to know that string.empty is making problem,what value we can pass instead of string.empty for a datetime column in C#.

What I want is ,Field value will get null value assigned not zero.

View 4 Replies

Copyrights 2005-15, All rights reserved