I am encountering a strange problem when attempting to execute a DELETE query agains a SQL Server table using VB.NET, SQL Command, and Parameters.
I have the following code:
Try
sqlCommand.Transaction = transaction1
sqlCommand.Connection = conn
[Code]....
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:
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The following is some code to execute code at runtime: Dim SourceCode As String = txtCode.Text
Dim Dlls() As String = {"System.dll", "System.Core.dll", "System.Data.dll", "System.Windows.Forms.dll"} 'Any referenced dll's
Dim Compiler As New VbCompiler(SourceCode, Dlls)
Dim CodeAssembly As Assembly = Compiler.Compile
If Compiler.Successful Then
[Code]...
I am developing a web mapping application intranet from our company. And I am creating add polygon function on the map. I use AspMap, Vb.net and sql server. So when user click a button for add new record therefor out the web form input data attribute. When i run the application I get trouble like this Incorrect syntax near '?' My code is:
Private Sub AddNewShape(ByVal checklist_id As String, ByVal type As String, ByVal shape As AspMap.Shape, ByVal address_area As String, ByVal dmz As String, ByVal customerid As String, ByVal source As String, ByVal area As String, ByVal instalatur As String, ByVal developer As String, ByVal data_received As DateTime, ByVal doc_data As DateTime, ByVal datereport As DateTime, ByVal remark As String)
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Is this possible to run 2 SqlCommand together??
Because after executed somehow the 2nd inside the loop did not execute or insert data.
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:
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In order to check if specific user is db_owner, i excute the following query:
"select is_rolemember('db_owner', '" & p_userName & "')"
using the SqlCommand ExecuteNonQuery method.How do I get the query result?
Here is my code:
Dim com As SqlCommand = New SqlCommand(sql, m_connection)
com.ExecuteNonQuery()
[code].....
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:
da.UpDateCommand.Parameters("@OrderID_New").Value = myTextBox.Text
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.
strSQL = "UPDATE [Order Details] " & _
"SET OrderID = @OrderID_New, ProductID = @ProductID_New, " & _
"Quantity = @Quantity_New, UnitPrice = @UnitPrice_New " & _
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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")
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I'm writing a query to select all records that has any part of parameter. I have one table called Employees. Some people have name like this: John David Clark If the parameter is
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I should be able to get result back as long as there's a match in the parameters. If I use Function Contains (q.FirstName & " " & q.LastName).Contains(employeeName), I will not get any result back if employeeName is "John Clark" Function Contains looks only for next words from left to right. It doesn't match a single word at a time. So that's why I used this in the Linq to SQL:
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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")
[code]in this code, do the objects con and cmd get disposed because the return statement is placed before the end using statement.
View 1 RepliessqlCmd.Parameters.Add(New SqlParameter("@DateCreated", SqlDbType.DateTime)).Value = CDate(Now)
it throws error. Kindly suggest how can I assign date to sqlcmd parameter.
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]
View 16 RepliesAfter 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?
View 8 RepliesI 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.
View 4 RepliesIn 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?
View 2 RepliesI'm trying to update a record by using the following code but it's not updating it, the value stays the original database value.[code]
View 3 RepliesI'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.
I am getting error [07002] the # binded parameters < the # of parameters makers, i checked both parameters were perfect even though i am getting this error here is my code
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I'm using the following select statement and it works fine but I need it to AutoComplete the results that contain the term as well and not just the results that start with the term. To clarify, if I type in "phrase" it won't AutoComplete the result "my phrase" but if I type in "my" it will. Anyone have a clue what I'm doing wrong? I've tried to use "contains @term" instead of "like @term" but
View 2 RepliesCan I use two command object with one open connection in one procedure at VB.NET?
View 2 Repliesretrieve the actual T-SQL that is to be executed by a SqlCommand object (with a CommandType of StoredProcedure) before it executes...My scenario involves optionally saving DB operations to a file or MSMQ before the command is actually executed. My assumption is that if you create a SqlCommand like the following:
Using oCommand As New SqlCommand("sp_Foo")
oCommand.CommandType = CommandType.StoredProcedure
oCommand.Parameters.Add(New SqlParameter("@Param1", "value1"))
oCommand.ExecuteNonQuery()
End Using
It winds up executing some T-SQL like:
EXEC sp_Foo @Param1 = 'value1'
Is that assumption correct? If so, is it possible to retrieve that actual T-SQL somehow? My goal here is to get the parsing, validation, etc. benefits of using the SqlCommand class since I'm going to be using it anyway.
I have a stored procedure that repeats a block of T-SQL statements using WHILE logic until it finds a matching record in a table. When I execute the procedure directly from the SQL Management Studio, it works and returns a record, even when the statements within the WHILE logic have to be repeated over and over again before a matching record is found.
However, when I use the same stored procedure as the commandtext property of an sqlcommand object in Visual Studion 2008 (VB) and call the executereader method of the sqlcommand, the resulting SqlDataReader will only return a row if the T-SQL statements within the WHILE logic find a matching record after a single pass. If it takes more than one pass to find a matching record the SqlDataReader does not return a row. It's like it abandons the execution of the stored procedure after the first pass of the statements within the While logic, disregarding the repetition.
I have a datalist that returns multiple entries and I need to insert values via an OnClick command for a button I have with each entry. Problem is it's saying that a label I have in the datalist is not declared, in particular the MyLabel.Text from my Insert statement below.Can someone show me with code how I can declare this label or is it even possible? When I put the label outside of the datalist, everything works fine but when it's inside it says it's not declared. [code]...
View 5 RepliesI've got a conversion utility that basically copies values from one table to another. It's worked great for a while, but I've run into a strange issue with one customer. They got through 1.5 million records with the utility but now it is completely halted.When calling a stored procedure from VB.Net, it just hangs until the SqlCommand times out.Calling the same sproc from Management Studio executes instantly. My VB.Net code for the SqlCommand is below (insertConn is defined and opened earlier, dr is a SqlDataReader that has been populated in a previous step from completely different SqlConnection and SqlCommand instances):
Dim conn As New SqlConnection("connection string here")
Dim insertConn As New SqlConnection("connection string here")
Dim dr As SqlDataReader = Nothing
[code]......
I'm calling Sqlcommand.ExecScalar() - stepping through the stored proc works fine, right under
RETURN @RecordNum
@RecordNum correctly contains a bigint, as scoped. When I step into the RETURN.. I get an exception thrown, that visual studio does not seem to be able to capture.
The stored procedure works fine when executed directly, and returns a value without problem, and it seems like all is well, stepping through it from my code.
But as soon as I step into 'RETURN @RecordNum' (and recordnum contains a valid number..) BOOM! EXCEPTION! (and no details in the exception either back in visual studio.
I'm blaming a glitch in the matrix.
I've turned off even assigned the return from the ExecScalar to anything, same result.. I've tried ExecReader(), same result. I have turned NO COUNT on and off, same result. If I wasn't already bald, I would be now!
Look at the code. all i need to do is take all notes from orders table.
The connection is openned
Private Sub Load_History()
Dim myCnt As Integer
Dim myStr As String
Dim totalrows As Integer
Dim myDataset As New DataSet
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VB Imports System.Data.SqlClient Public Class frmMain
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I have three ways of adding parameters to my query commented out above. The all seem to return 1781 records (which is all of the records) and will not filter out to what the UserName variable equals which should reduce it to 32 rows.
I use a Console.WriteLine to show that the UserName is indeed my username. But it seems to not be getting passed to the query properly. I tested the Stored Procedure before even starting in on the program, so I know it functions properly. I just don't know what I'm missing from a VB.NET perspective to get the same results into my DataTable.