SQL Server :: Select Count Query And Parameters - Error: "Must Declare The Scalar Variable "@KategorijaID"."?
Sep 18, 2010
I have a problem with SELECT COUNT query in ASP.net. I want to create CMS with articles which have categories (which have the option to be deleted). The problem is that I want to get the number of articles within the specified category so if there aren't any articles with the specified category I can proceed with the category deletion.I have the following code:
[Code]....
After I click the button "Obriši" (Delete) I receive the following error: "Must declare the scalar variable "@KategorijaID"." I understand that the problem is with parameter, but I don't know how to correct it to use it for both the "command" and "brisanje" SQLCommands.
I am attempting to do an insert query on a webpage for a simple member registration form I have created in vs2010. I have done this type of thing before without problem using an access database, but now I'm using a sqlexpress db created from within vs2010. This is the screenshot of my insert query:
Now, when I execute this query in the form, I get an error that says:
Must declare the scalar variable "@FirstName".Description: An unhandled exception occurred during the execution of the current web request. Please review the stack trace for more information about the error and where it originated in the code.
Exception Details: System.Data.SqlClient.SqlException: Must declare the scalar variable "@FirstName".
Version Information: Microsoft .NET Framework Version:2.0.50727.4952; ASP.NET Version:2.0.50727.4955
At first I just had my query with all ?'s instead of @FirstName, etc in the insert statement itself, but I got an error on that as well but it was different, it just said syntax error near "?" or something to that effect. If I manually perform this query in the builder, and it pops up a window that asks for values on everything, I put something into each field and the insert works great. It just won't work with these parameters for some reason. Can someone advise what I need to do?
OK, this may be a little difficult to explain, so I will try my best and post the code I currently have.
I have a table with a list of usernames. I have the list of usernames displayed on a page through a GridView. What I am attempting to do is for each username in the column "adminUsernames", I need to insert a set of values in another database table for EACH "adminUsernames" that exists. Example: There are 2 adminUsernames vales in 2 seperate rows. These are "Admin 1" and "Admin 2". For each adminUsername values (Admin 1, Admin 2), I need a row interted in another database table. Maybe the code that I have (that does not work) will help you see what is happening:
[Code]....
I keep receiving this error when running: [Code]....
when I am executing an above code and click on button to insert data is shows an error message
as: System.Data.SqlClient.SqlException: Must declare the scalar variable "@imagefile"
Protected Sub button1_Click(ByVal sender As Object, ByVal e As System.EventArgs) Handles button1.Click Try If fileupload1.HasFile Then 'getting length of uploaded file
i have two tables in my database, product(productid as pk) and productdetails(productid as fk), in a relationship.i have dropdownlist which on pageload displays data from my product table, showing all product name. AutoPostBack enabled. Its working fine.i have a gridview which should display the productdetails data when i select a value from my dropdown list.i have written the code for the gridview on the selected_index_change event of the drop down list, please correct me this is wrong;here is the code;
Protected Sub DropDownList1_SelectedIndexChanged(ByVal sender As Object, ByVal e As System.EventArgs) Handles DropDownList1.SelectedIndexChanged Dim ConString As String [code]...
so when i select the value in the dropdownlist i get this error .Must declare the scalar variable "@ProductID".
I can't figure out whats wrong with my contact page. I am getting this error when executing. It complied fine, I see the page as it suppose to. Then I enter all my contact information and click submit I am getting this error. Can someone guide me. Here is the error msg
must declare the scalar variable @txtSubject Here is the part of relevant code
Protected Sub Button1_Click(ByVal sender As Object, ByVal e As System.EventArgs) Handles btnSubmit.Click Dim ContactDataSource As New SqlDataSource() ContactDataSource.ConnectionString = ConfigurationManager.ConnectionStrings("ASPNETDBConnectionString1").ToString() ContactDataSource.InsertCommandType = SqlDataSourceCommandType.Text ContactDataSource.InsertCommand = "INSERT INTO Enquery (EnqSubject,EnqFirstname, EnqLastname,EnqContactNumber,EnqEmail,EnqMsg,EnqDateTimeStamp,EnqIPAddress) values (@txtSubject, @txtFirstname, @txtLastname,@txtPhone,@txtEmail,@txtMsg, @txtDateTimeStamp,@txtIpAddress)"
Must declare the scalar variable "@EmailAddress" when I'm debugging and my values aren't being submitted to the DB. Can the eyes of the forum see my error?
am trying to provide users with a number of options, among which, I would like them to see a sum of trips that they have talked about. I have therefore the Trips Table and the Users table. The UserId is the PK of User Table and FK of Trips Table. Trip_Id is PK of Trips Table.In order to see a sum of the number of trips that a user has post, this is the query I have wrote into SQLDATASOURCE:
[Code]....
Everything seems really simple and cannot figure out why when I try to login to test the application , the error I get is: Must declare the scalar variable "@UserId".
I have many record in my sql table and i want to fetch last row of table.I have used max function but it is very slow
i m using this query-
select pm_name from datos where date_time = (select Max(date_time) from datos) but it takes more time i want to use select count(date_time) from datos this query provide me row number then how can fetch row of this number.
I have an asp.net site which includes a "search" page that queries an SQL table, then redirects the user to a "results" page where the results of the query are displayed. The parameters for the query are assembled into a string which is the SELECT statement. I've been asked to add additional functionality that requires a secondary search which takes place on the "results" page. How can I pass the parameters from the "search" page to the "results" page so that I can access those parameters in the code behind? Here's the first page code behind (I inherited most of this from another developer):
[Code]....
And the second page--it would be on line 51 that I would need to insert the parameters from the search above:
I will declarate a attribute, but it gives me an error
This query works fine and returns 1 record from type int:
SELECT TOP 1 DataObjectVersionID FROM tblDataObjectVersionPropertyValueText WHERE PropValue like CAST('00010281' AS ntext) ORDER BY DataObjectVersionID DESC
And when I will declarate a attribute/parameter it gives me an error:
DECLARE @dataObjectVersionId INT SET @dataObjectVersionId = SELECT TOP 1 DataObjectVersionID FROM tblDataObjectVersionPropertyValueText WHERE PropValue like CAST('00010281' AS ntext) ORDER BY DataObjectVersionID DESC
Error message:
Msg 156, Level 15, State 1, Line 2 Incorrect syntax near the keyword 'SELECT'.
When I want to get the output values its okay but I also want returning a table as a result data.But Datareader has no rows.is it possible if I want a returning query result and multiple output values togather ?I wrote a test above.I can get output values as sqlparameters. But Datareader attached to a Gridview is empty.can you detect whats wrong here and it doesnt return a query result.So stored procedure is not standart or ı am doing something wrong.this doesnt raise any exception.but not returning any data.
I am trying to show a Gridview that lists information in a database based on a query. The query takes a parameter of a string, how do you define what this parameter is. An example of the screen I am stuck at is:http://static.asp.net/asp.net/images/dataaccess/07fig08cs.pngAn example of the code i want to use is:parameter for my object data source select query = OBDS_Query_ParameterOBDS_Query_Parameter = str;
Sorry Im not sure how to explain it...For instance if I have a query that GetAllProducts(String userName); How do i pass or define what userName is when using the data gridview. I am using an Object DataSource and linking the data Gridview to that. I can do this without the object data source and strictly melodramatically like this:
I'm creating a webpage with serveral web controls to set search parameters for querying an SQL table. My plan is to use a TableAdapter to hold the query. If the user decides not to use one, several, or any of the web controls to filter their search, I want the SELECT to execute without complaining that it doesn't have parameter values. Should my SQL query look like
Possible Duplicate: Use of var keyword in C# Hi, I am pretty new in C#,I would like to know the best practices in declaring variables.I know it is possible to use VAR (explicit declaration) or the DataType when declaring a variable (implicit).
