ADO.NET :: Getting Error - The Data Types Text And Varchar Are Incompatible In The Equal To Operator?

Nov 10, 2010

So admitingly I am fairly new at .NET...I have been a PHP guy for rather long time...

Heres my code:


Essentially what I am trying to do is query the SQL database by the username. This above code is a method within the user respository for fetching a user by their username. The variable "username" is passed in as a string.

When the method is called a recieve the following error:

The data types text and varchar are incompatible in the equal to operator.

This to me is rather confusing since the field in the database, user_username, is a text and the variable passed in, as said, is a string. They should be synonomous for all practical purposes.

Ideas? Thoughts? Fixes?

View 2 Replies

Similar Messages:

Data Types Text And Varchar Are Incompatible In The Equal To Operator?

Dec 4, 2010

Here is the code:


Dim intusercount As Integer = 0
Using connection As New SqlConnection("Data Source=.SQLEXPRESS;AttachDbFilename=|DataDirectory|Database.mdf;Integrated Security=True;User Instance=True")
Using command As New SqlCommand("SELECT [ID] FROM [Members] WHERE [Username]=@Username AND [Password]=@Password", connection)
command.Parameters.Add("@Username", Data.SqlDbType.VarChar).Value = TextBox1.Text
command.Parameters.Add("@Password", Data.SqlDbType.VarChar).Value = TextBox2.Text
intusercount = command.ExecuteScalar
If intusercount > 0 Then
End If
End Using
End Using

The data types text and varchar are incompatible in the equal to operator.

Source Error:

Line 11: command.Parameters.Add("@Password", Data.SqlDbType.VarChar).Value = TextBox2.Text
Line 12: connection.Open()
Line 13: intusercount = command.ExecuteScalar
Line 14: connection.Close()
Line 15: If intusercount > 0 Then


[SqlException (0x80131904): The data types text and varchar are incompatible in the equal to operator.]
System.Data.SqlClient.SqlConnection.OnError(SqlException exception, Boolean breakConnection) +2030802
System.Data.SqlClient.SqlInternalConnection.OnError(SqlException exception, Boolean breakConnection) +5009584
System.Data.SqlClient.TdsParser.ThrowExceptionAndWarning() +234
System.Data.SqlClient.TdsParser.Run(RunBehavior runBehavior, SqlCommand cmdHandler, SqlDataReader dataStream, BulkCopySimpleResultSet bulkCopyHandler, TdsParserStateObject stateObj) +2275
System.Data.SqlClient.SqlDataReader.ConsumeMetaData() +33
System.Data.SqlClient.SqlDataReader.get_MetaData() +86
System.Data.SqlClient.SqlCommand.FinishExecuteReader(SqlDataReader ds, RunBehavior runBehavior, String resetOptionsString) +311
System.Data.SqlClient.SqlCommand.RunExecuteReaderTds(CommandBehavior cmdBehavior, RunBehavior runBehavior, Boolean returnStream, Boolean async) +987
System.Data.SqlClient.SqlCommand.RunExecuteReader(CommandBehavior cmdBehavior, RunBehavior runBehavior, Boolean returnStream, String method, DbAsyncResult result) +162
System.Data.SqlClient.SqlCommand.RunExecuteReader(CommandBehavior cmdBehavior, RunBehavior runBehavior, Boolean returnStream, String method) +32
System.Data.SqlClient.SqlCommand.ExecuteScalar() +139
_Default.Button1_Click(Object sender, EventArgs e) in C:UsersUserDocumentsVisual Studio 2010WebSitesWebSite13Default.aspx.vb:13
System.Web.UI.WebControls.Button.OnClick(EventArgs e) +118
System.Web.UI.WebControls.Button.RaisePostBackEvent(String eventArgument) +112
System.Web.UI.WebControls.Button.System.Web.UI.IPostBackEventHandler.RaisePostBackEvent(String eventArgument) +10
System.Web.UI.Page.RaisePostBackEvent(IPostBackEventHandler sourceControl, String eventArgument) +13
System.Web.UI.Page.RaisePostBackEvent(NameValueCollection postData) +36
System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint) +5563

View 2 Replies

DataSource Controls :: Data Types Text And Varchar Are Incompatible In The Equal To Operator?

Jul 4, 2010

I get the following error: The data types text and varchar are incompatible in the equal to's my code (PageName is a string Parameter) :

SqlConnection sql = SQLconnection();
SqlCommand cmd = new SqlCommand();
cmd.CommandText = "Select title, text, postdate, sticky from articles where pagename = @pagename;";

View 2 Replies

ADO.NET :: The Data Types Ntext And Nvarchar Are Incompatible In The Equal To Operator - How To Avoid This Error

Mar 16, 2011

I've found a lot of similar topics but none of them solves my problem.

I have table structure like that


Everyone suggests to change ntext type to nvarchar(MAX) and life will be beautyfull. But... First, I need
ntext, simply because there should be text in this field.

nvarchar(MAX) equals 4096 bytes which is to small for large text. Second, I already have table with
ntext field, which does not cause this error.

View 2 Replies

C# - All Queries Combined Using A UNION, INTERSECT Operator Must Have An Equal Number?

Jan 7, 2010

I have a linq to sql query where I have to perform union two set of records.

And I do not have equal number of fields, so added the null

eg my psuedo code is


after googling some hours I came to understand that it is bug in 3.5 framework.

Now I want to retrieve the result.

How do I do thatI tried framing into two seperate iqueryable

var a= first query

var b =second query

ilist result =a.union b

This too results in the same error.

View 3 Replies

.net - Two Incompatible Session State Types In ASP.NET?

Mar 27, 2011

I see two means of working with session data in ASP.NET MVC:

System.Web.SessionState.HttpSessionState, available on HttpApplication
System.Web.HttpSessionStateBase, available on Controller

Data stored in one seems to be available in the other. Unfortunately the only common ancestor of these two types is System.Object, meaning that I can't create reusable utility code for the abstraction of either.Why is the API this way? Is there an important difference between the two that I am missing?

View 1 Replies

Forms Data Controls :: Getting Error - CS0019: Operator '/' Cannot Be Applied To Operands Of Type 'object' And 'int'

Jul 21, 2010

I am moving a website to a new framework. But the old site is in vb and the new on I'm coding it in C#.

I have this line of code that I can't figure out, This is on the aspx page. It's in a datagrid as well.


The line that is messing up is the second to last one where it starts with </a>(<%#Math.Round....

Here is the error I get...CS0019: Operator '/' cannot be applied to operands of type 'object' and 'int'

I've tried to work around it but can't fix this

View 4 Replies

C# - Error Converting Data Type Varchar To Bigint Inline Sql Statements?

Aug 31, 2010

This is the code i have used to get LocationID from database with MerchantID. I am getting an exception from Fill dataset part. The error is Error converting data type varchar to bigint.

public DataSet getLocationID(long MerchantID)
//long LOCID = null;
SqlParameter[] parameters = new SqlParameter[]
new SqlParameter("@merchantID",MerchantID)
string strCommandText = "Select LocationID from Merchant_Location where MerchantID ='@merchantID' order by LocationID ASC";
DataSet pds = new DataSet();
SqlHelper.FillDataset(DbConnString, System.Data.CommandType.Text, strCommandText, pds, new string[] { "LocID" }, parameters);
return pds;
catch (Exception ex)
//LogError("Error Occurred When Retrieving LocationID: " + MerchantID.ToString(), ex);
return null;

View 2 Replies

Configuration :: Web App Error: An Address Incompatible With The Requested Protocol Was Used?

Apr 3, 2010

I am encountering an error when attempting to log into a web app (via a login page) on one of my servers. The web app is an IMAP4 client under development that should connect to the mail server currently running on the same machine. I am successful at connecting to the mail server from my development workstation running an IMAP4 desktop client under similar development.The error is... An address incompatible with the requested protocol was usedThe login page works fine in my development environment on my local workstation (connecting to the local mail server). A little research suggests the error has something to do with IPv4 vs IPv6 addressing, but I'm not sure. I have 2 network adapters in this server, for each of which IPv6 is not enabled. I have successfully reset the TCP/IP stack on the server (netsh Winsock reset) but still the error returns. Only one of the adapters is enabled and being used.

View 4 Replies

SQL Server :: Operand Type Clash : Int Is Incompatible With Xml Error?

Feb 15, 2011

Following Query giving error, Please let me know whats prevent from getting this error.

declare @EmployeeID int
set @EmployeeID = 454655
SET @XMLCONTENT = N'<EmployeeID> <Data ID="'+ CONVERT(nvarchar(100),@EmployeeID) +'"/> </EmployeeID>'

View 3 Replies

DataSource Controls :: System.Data.SqlClient.SqlException - Error Converting Data Type Varchar To Bigint?

Jan 16, 2010

I have a website having an aunthentication system. When I am setting my website on IIS 6 the code is absolutly working fine. But when i configure the website on IIS 7 (Windows 2008 server) it is showing me the above error. I am using a stored procedure for it

View 3 Replies

SQL Server :: Error Converting Data Type Varchar Column To Float - The Statement Has Been Terminated

Feb 1, 2011

I want to change one of my table columns data type. Now the column data type is varchar and i want to change it to float. Updated all the column data to numeric and tried to convert the datatype with the following syntax

alter table vibration_values alter column dis_v float

but getting the error as

Error converting data type varchar to float.

The statement has been terminated.

Suprisingly every thing worked well in sqlserver 2005 and not working in sqlserver 2000.

View 6 Replies

Textbox - Validate Text Box Contains Integer Greater Than Equal To Zero?

Mar 29, 2010

If I want to validate that a text box contains an integer greater than or equal to zero. Do I need to use TWO asp:CompareValidator controls: one with a DataTypeCheck operator and one with a GreaterThanEqual operator?

Or is the datatype operator redundant? Can I just use a single validator with the GreaterThanEqual operator (and the type set to Integer)?

View 1 Replies

DataSource Controls :: SQL Server Does Not Handle Comparison Of NText, Text / Xml Or Image Data Types

May 24, 2010

I have a bit of code in a clickevent handler like this:-

Dim products = From p In db.Products where p.product_name = "Tool" Select New With {p.Product_ID,p.Product_name}
Gridview1.Datasource = products

But causes error=SQL Server does not handle comparison of NText, Text, Xml, or Image data types?

where product_name field is set as type text

View 1 Replies

SQL Server :: Use Of VarChar(8000) Vs VarChar(7500) With 2000

Sep 29, 2010

I have heard that even though the maximum varchar size is 8000, that we should not go higher than 7500 for the size value. What is the logic behind this advice?

View 1 Replies

Access :: Syntax Error (missing Operator) In Query Expression

Nov 1, 2010

im using MS-Access database, i tried to add some data to the database from C#. the column datatype is Memo.

From front-end, the user type some text on HTML editor that content to be add to this column, if i enter minimal text then data is adding fine but, if enter 2 or 3page content then im getting error as


View 4 Replies

Databases :: Syntax Error (missing Operator) In Query Expression?

Mar 8, 2010

I have a Excel user application which has a user form (named 'Registo') that displays criteria and an image that has been entered in it's corresponding spreadsheet. This works the way it should. There's also the ability to search the spreadsheet via a form (by clicking 'Pesquisar' button) this opens a search form. However, I having a bit of a problem with it. When I try to search for something it basically doesn't do anything at all. It just sits there. So I tried to debug it and I think I'm having a problem with either the JET db engine or somethign with teh query or maybe I don't have the correct reference.

View 2 Replies

Access :: Syntax Error (missing Operator) In Query Expression 'id=' ()

Feb 6, 2010

Error Type:

Microsoft OLE DB Provider for ODBC Drivers (0x80040E14) [Microsoft][ODBC Microsoft Access Driver] Syntax error (missing operator) in query expression 'id='. /bioskop/pesan.asp, line 13


View 2 Replies

Access :: Syntax Error (missing Operator) In Query Expression 'sai',sss''.

Apr 15, 2010

i am new to i am trying to develop an application i,e registration form in as user interface and ms access 2007 database as backend.i am trying to make aconnection to ms access 2007 db and save the data entered by the user in application.

i have saved my access db 2007 file in 'D drive' and my code in application is:


View 3 Replies

Forms Data Controls :: DataNavigateUrlFormatString Error ""Index (zero Based) Must Be Greater Than Or Equal To Zero And Less Than The Size Of The Argument List"

Sep 22, 2010

I am bindibg data to a grid and in my asp page I have the following asp:HyperLinkField:

HeaderText="serialno" DataNavigateUrlFormatString="DeviceDetails.aspx?serialno={0}"

This is working perfectly, but when I add a second parameter to the querystring it does not work anymore:


I get the following error during DataBind to a grid: [System.FormatException] = {"Index (zero based) must be greater than or equal to zero and less than the size of the argument list."} What does this mean? Is {1} not a string or is it because of something else?

View 3 Replies

SQL Server :: Implicit Conversion Of Varchar Value To Varchar

Jan 18, 2011

I have two is "TEMS1" and another one is "TEMSLIVE"

"TEMS1" is my local database.
"TEMSLIVE" is client database.

my application is working fine while connecting to my local database. when connecting to client database("TEMSLIVE") it's shows "Msg 457, Level 16, State 1, Procedure GET_MY_TRAVEL_PENDING_ACTIONS, Line 53 Implicit conversion of varchar value to varchar cannot be performed because the collation of the value is unresolved due to a collation conflict." this error. i have compared "TEMS1" and "TEMSLIVE" stored procedure(GET_MY_TRAVEL_PENDING_ACTIONS),but both are identical only.

View 3 Replies

DataSource Controls :: Editing Text Enconding Problem With Varchar() Type?

Apr 13, 2010

when I edit varchar field and save it to Sql Server, edited non-english text look as ??? symbols.I tried to correct this as

in web.config:


View 3 Replies

Insert Record Into MSAccess Table - Syntax Error (missing Operator) In Query Expression

Mar 19, 2016

As I am learning . when i try to insert record into msaccess table why it says -

Syntax error (missing operator) in query expression 'user1','' ,'12312456')'.

As i found the same code at the following link [URL] ....

protected void Button1_Click(object sender, EventArgs e) {
OleDbConnection con;
using (con = new OleDbConnection(@"Provider=Microsoft.Jet.OLEDB.4.0;" + @"DATA SOURCE=C:Database iershop.mdb")) {

[Code] ....

View 1 Replies

SQL Server :: Get The Following Error "Conversion Failed When Converting The Varchar Value?

Aug 4, 2010

I get the following error "Conversion failed when converting the varchar value ' (' to data type int." when executing this code

View 2 Replies

.net - DotNetNuke: GridView Incompatible With Data Access Layer?

Jan 25, 2011

I'm working on a DotNetNuke module in C#, and in order to cut down on the amount of complexity I have elected to try and keep the configuration of the module in one page (other than the standard Settings module). I now wonder how wise of an idea that is.My module is a simple image gallery, with one or many images. Each image has a title, an image source (url) and a destination (another url). Therefore, I figured that for my admin interface, I could have a simple 'grid' of data where you can edit all of the existing entries or add a new one, all on the same page, sort of like this:

Title Image URL Anchor HREF
[A Picture! ] [ ] []
[Another Picture!] [] []
[ ] [ ] [ ]

Looking through WebControls, I found the GridView, which at first blush seemed like the sort of thing I was looking for. However, taking a closer gander at it, I found that it needed to be bound directly to a data source, while it seems like the DotNetNuke standard of doing things in the Data Access Layer is to create a collection of data objects like so:

// EditDiscovery.ascx.cs
DiscoveryController objDiscoverys = new DiscoveryController();
List<DiscoveryInfo> lstDiscoveries = objDiscoverys.GetDiscoverys(ModuleId);[code]....

Is there something I'm missing with the GridView, or should I be changing the GetDiscoverys function to return a DataSet as opposed to a List of DiscoveryInfo objects? Or is there a better approach that does things that align better with DotNetNuke's DAL?

View 2 Replies

Copyrights 2005-15, All rights reserved