I am experiementing with table updates and the code below gives me the following error message: "The variable named "@Processed" has already been declared... at the following code line: clsWTAdapter.Update("clsWTDataTable"). I fear that all of my code is a general mess, and I am sure there is a much better way to go about it.
Dim clsCmd As New SqlClient.SqlCommand
Dim clsCMAdapter = New SqlClient.SqlDataAdapter("SELECT * FROM CatalogMaster WHERE Processed <>-1", clsCnn)
Dim clsCMDataTable = New DataTable("CatalogMaster")
My colleague gave me a DLL that manage all database business. I wanted to invoke a function that uses Stored Procedure and return the search result. In the function receive a parameter type in ystem.Data.IDataParameter[]. Below is my codes.
In one of our application the parameters passed to a stored procedure in this way
Dim parm As New SqlParameter("searchText", SqlDbType.VarChar) parm.Direction = ParameterDirection.Input parm.Size = 50 parm.Value="test" cmd.Parameters.Add(parm)
and the procedure contains a parameter as @searchText
ie the parameter name passed from the code is searchText and that in the stored procedure is @searchText .
But it is working properly, i am always getting the required results.
So my question is like so there is no need to specify @ before the parameter? Whether it will append @
I know to define integer type sqlparameter but I do not know the decimal type sqlparameter for the precession.
I am giving a sample example.
//Code Dim sqlparameters(2) as sqlparameter sqlparameters(0)=new sqlparameter ("@RMID", SqlDbtype.integer,7) but in case of decimal I am giving like this sqlparameters(1)=new sqlparameter ("@RMID", SqlDbtype.decimal,7,2) which is wrong
I have a class, LogRequest, which contains parameters (members) for an object.This object is turned to an sql query using another class, DataAccess.And lastly, I have the class Search which run the sql query.[code]...
I have a problem with something I have done many times but this time it just doesn't work. This is what I am trying to do (in Visual Studio 2003 and VB.NET). Earlier in the [Code]
I have a web application running written on ASP .Net.We have a class accessing the back end written in VB .net which has shared functions for DB interactions.The above error comes up when ever two users are in the same page... tying to do the same thing.Couldn't find a reason why this would happen.The scope of the SQL command is limited and parameters are cleared at the end.
I keep getting a strange error message when I try to call my stored procedure. Possibly I have a syntax error? Not my store procedure does not return a value. Also the error message is included at the end of this post.
--VB .NET Code Dim connString As String = ConfigurationManager.ConnectionStrings("EMRConnectionString").ConnectionString Dim conn As New SqlConnection(connString) ' Create a new sql command, and reference the stored procedure by name
I'm changing old, vulnerable SqlCommands with SqlParameters but get a SqlException: System.Data.SqlClient.SqlException {"Conversion failed when converting datetime from character string."}
on sqlCommand.ExecuteScalar: Dim sqlString As String = _ "SELECT TOP 1 " & _ "fiSL " & _ "FROM " & _
In newer editions of .Net I can pass -1 for the output size for VarChar(Max) columns, but in Visual Studio 2003 I get the following System.ArgumentException: Invalid parameter Size value '-1'. The value must be greater than or equal to 0. What should I specify as the size for a VarChar(Max) column in Visual Studio 2003?
I have an SqlCommand with parameters. Due to some external requirement (see PS), I need one T-SQL string instead, i.e., I need ... @parameter ... replaced by ... the-value-of-@parameter-encoded-correctly ... (e.g. O'Brien --> 'O''Brien', 02 Mar 2010 --> '20100302', 3.5 --> 3.5).
I know that I could home-brew such a solution quite easily, but correct escaping is tricky (make sure you get the right date and number formats, watch for quote signs in strings, etc.), and I guess that I'm not the only one needing this, so my question is:
Below is an UpDate Statement I am practising with David Sceppa's book ADO .NET 2.0 Core Reference pages 467 - 468. I can supply the parameter values for "parameter_New" by doing something like:
And so on...My problem is how to supply the value of "paramete_Old" to be able to compare before update. I gues it has to do with obtaining the Original values of the rows based on RowVersion but I don't know how to effect it.
I have a Stored Procedure which returns 10 columns of data. Using cmd.ExecuteScalar() returns the value of the 1st column from the 1st record. How can I change this so that I can return different columns, by specifying their alias/dataitem name?
I want to be able to do something like: Dim FirstName as String = cmd.ExecuteScalar("FirstName")
If there an easy way to get a completed SQL statement back after parameter substitution? I.e., I want to keep a logfile of all the SQL this program runs. Or if I want to do this, will I just want to get rid of Parameters, and do the whole query the old school way, in one big string? Simple Example: I want to capture the output:
I am almost finished building my application. All the data need is being inputted from various locations. I have a form that is suppose to consolidate all this data into a specific format. There are 47 fields that have to be populated and/or calculated based on two fields, the Username and a date range (this part is done). I was trying to set each of the TextBoxes equal to the SQLCommand that would return the proper value, but i am not calling it correctly. Would somebody please take look, is there something i am missing, do i need to write it in a function? I have had to use the Select statement itself in a couple of filters so I'm pretty sure that is correct, but i need help getting it to run the sqlcommand.[code]
After the SQL Publishing Wizard has generated a database script I would like to know if it would be possible to execute the whole SQL script using the SqlCommand object, to recreate the database all over again, in case anything goes wrong?
I have a VB.net script that runs a simulation on several machines within the domain. During this simulation, a login is initiated to an application via a web portal. After the login, the connection to a specific Citrix server (whichever is least busy) is established. At this point, I want to run a Netstat -r | find (IP Range of server farm) in command line. From what I have deduced, I probably won't be able to do what I want from the command line and everything will have to be with in the VB.net module using System.Net.NetworkInformation. I am a Citrix Administrator with a decent level of .net experience but I am having trouble with this.
In a for each loop I am adding rows to a table for a cross reference. Using the following code:
For Each cp In pCheckPoints If cp <> String.Empty Then Dim insertSQL As New StringBuilder With insertSQL .Append("INSERT INTO [CheckpointMessage] ( ")
Without the objCommand.CommandText = String.Empty line the CommandText is appending the insertSQL but that doesn't make any sense to me because I would expect the objCommand's commandText to be empty since it is in a using block.
i tried this sqlcommand select max(food) from foods and i tried this dim x as double=cdbl(cmd.executescalar)and it throws the the exception {System.Invalid CastException}because the food table is empty and the max(food) is null how can i fix that because i want to take the value and add one to it so do i need to catch the error or try another conversion option?
I'm a novice VB programmer and I am getting the above error when I try to display the results of one of my Stored Procs in SQL Server which doesn't need any parameters.
My code excerpt: Dim SQLCmd as SQLCommand = new SQLCommand() SQLCmd.CommandText = "Exec AllTableCount" SQLCmd.CommandType = CommandType.StoredProcedure SQLCmd.Connection = GlobalFunctions.GlobalF.GetDevSQLServerStoredProcedure(SQLCmd.CommandType) SQLCmd.ExecuteNonQuery() [Code] .....
I can see this SP from VS 2008 in the Server Explorer. So the problem seems to be that I don't know how to connect a data adapter to an SP. Just a string query.
