Check For Errors When Running DataAdapter / DataSet SQL Query?
Jul 8, 2010
This is how I update a table using DataAdapter and DataSet in VB using SQL Server[code]...
I know that the Fill method does not make sense in case of an INSERT statement, but I am new to this technology and the above statement does the job and updates the table w/o problems. My question is this: If there was an error (say a duplicate key error) how would I know this in my application? Should I be putting the above code in a try/catch block?
Also, if there is a "proper" method for running INSERT statements using a DataAdapter/DataSet combination that does not use the Fill method, please indicate that as well.
I have access Query have more than one table. I want to insert into it. I cannot insert into it by CommandBuilder coz CommandBuilder for one table only so how can I do that using DataAdapter with dataset.
I am using a sql server database and i am storing the time value in the datetime variable. I am developing a booking system application in vb.net. When I want to view already made bookings using datagridview and by implementing dataadapter and dataset...When the table is shown in the datagridview I want custom column names to be shown so tell me that how can i use alias in the query given in datadapter initialization part?
I have an application with a number of forms that basically access the same data (or subsets of it)Can the data adapter, connection object etc be opened in a module so that all the forms have access to them to avoid writing the same code in each form?I had a go at doing this but they seemed not visible to the form?
I'm having trouble updating a sql server database with a dataset using a dataadapter. I have used the dataadapter with success in the past when adding new rows, using a single table, and just calling the dataadapter.update command.However, I am now running into a more complex scenario and I need to use dataadapter.UpdateCommand method and I'm having lots of problems.
The sql statement that I'm using to fill the dataset looks like this: "Select [Order Details].ProductID, [Order Details].UnitPrice, [Order Details].Quantity, [Order Details].Discount, Products.ProductName From [Order Details] INNER JOIN Products ON [Order Details].ProductID = Products.ProductID Where OrderID='" & strOrderID & "'", sqlConn"
This is pulling the data from 2 different tables (Order Details and Products) and then joining them and filling the dataset, and I am seeing the exact results I want. I am then binding the dataset to a datagrid control that allows the user the option to edit the datagrid, which in turn updates the dataset.
So that being said how do I get the updated dataset back into the database? I tried using dataadapter.update but it informed me that I now need to use dataadapter.UpdateCommand. Ok, so I've looked up how to use UpdateCommand but I cannot for the life of me figure out how to set up the right sql command statement. Part of what has me confused is the UpdateCommand examples I have seen are working with a specific row and updating that rows data. I can get that to work but I want all changes to the dataset to persist and update to the database when the user is done working on the datagrid.
Also, the examples shown set up command parameters but again, this is only confusing me because I just want to send the whole dataset back to the database. It seems like the parameters are saying "Ok, this specific row in this specific dataset.table, update these specific fields in this specific database". I'm not sure how to accomplish that when working with a datagrid.
i try to use this yesterday it work fine..now, it will process too slow.. when fill the dataadapter into the dataset..here is the code it gives 20 menutes still no result.. "no error, no comment. it's like standby
Dim conn1 As MySqlConnection = New MySqlConnection("server=pc1;user id=user;Password=12345;persist security info=True;database=mytsmobile") conn1.Open()
1) If I insert a row into a sql table using insert query and 2) If I fill a datatable in dataset and add a row to it and again use the dataadapter.Update method for inserting this row.
1. Can someone show me sample codes on how to do that ?
2. I encountered a problem with the INSERT sql statement. I keep receiving syntax error in insert statement exception. Is there anything wrong with the statement ?
I am trying to run a query an Access db from VB. The general query which I want to run is
SELECT * FROM Patient WHERE Patient.PatientID = ? or SELECT * FROM Patient WHERE Patient.PatientLname = ?
I tried using an input box which captured the user input and pass that variable to the query, but that failed. Then I read about writing a function and using that, however, I keep getting an error which says Function not defined, but when stepping through the code, it seems to work. Here is my function: [Code]
When I made a program and tested it on the machine I have compiled it , all works well. I tested them even on my other computer works fine. Every time though when I passed the program to my friends computer or such , I got that common error message "A problem has encountered . tell Microsoft about this problem [Send Error Report] [Don't Send]. I checked my computer here is on XP SP3 with Microsoft .NET Framework 3.5 SP1 installed , same thing on my other computer. My friends computer is on an XP SP2 with Microsoft .NET Framework 3.5 (no SP1).
i have old program which is create in vb.5 i have in my PC vb.6 but when i want run program is give me a lot of error , i understand that i miss some .OCX i have this control or reference in my program 1- function MyScan(FpLibXCapture1 As FpLibXCapture, txtID As Object, LabelMessage As Label, LabelAlarm As Variant, Optional txtName As Object) Dim FpLibXVerify1 As FpLibXVerify Dim result As Boolean
Public Class Transform Dim inputFile As IO.StringReader ' Object variable Private Sub OpenFileDialog1_FileOk(ByVal sender As System.Object, ByVal e As System.ComponentModel.CancelEventArgs) Handles ofdOpenFile.FileOk
[code]....
And I am getting these errors:
'Private Sub Transform_Load(sender As Object, e As System.EventArgs)' has multiple definitions with identical signatures. Line 15 'strOutputPath' is not declared. It may be inaccessible due to its protection level. Line 51 Type 'XslCompiledTransform' is not defined. Line 83
I've created a project which references some other projects in my solution. I've added the references properly to my project (which I've done a thousand times before), and used them in an Imports statement. I can successfully create references to the objects contained in the referenced namespace at design-time but whenever I attempt to build or run the project, I get build errors saying that the referenced projects do not exist. Their Imports statements change to the broken green underline and the only way to remedy the problem is to re-add the references in my project's properties.
I know that the referenced projects are valid, will compile etc... because they work fine for other projects in the solution. Also, I can go to the definition of their objects as long as I don't build/run.
I have a problem with one of my projects that has only just started occuring this morning.I am using VS 2010.I get errors on every form that has a VS generated dataset, similar to;
me.<dataset> = new <namespace>.<dataset>() and with events <dataset> as <namespace>.<tableadapters>.<tableadapter>
I am writing a simple program that I'm going to use to end a process and then delete a folder with its contents but, I am running into some errors when I try to delete an .dll file using Kill. I would have figured this out on my own but its being weird.
1. If I run the .exe it doesn't delete it and gives me and error
2. I i run the .exe as administrator it doesn't delete it and gives me an error
3. If I run visual basic 2008 as Administrator and then execute the program it works.
4. If I try and execute it again as Administrator under Visual Basic it doesn't work and says I don't have sufficient access.
What I am trying to do is End a Process so that I am able to delete the folder, the folder contains and .dll which is being stuborn and saying I don't have sufficient access to do this.
Kill Public Class Form1 Public Sub killprocess(ByRef strproccesstokill As String) Dim proc() As Process = Process.GetProcesses
My code is supposed to select the month fand see what product ahas been sold and how much has been sold. It does it but i keep getting a Incorrect syntax near '='. and i cannot fix
I am experiencing something very bizarre when I execute the Fill method of my adapter. I've been running this query for months and all of the sudden this is happening after I installed SP1 for Visual Studio 2008. For some reason several DataRows in 2 of the 3 tables within my DataSet have errors in them when I view them in debug mode using the DataSet Visualizer. Here is a picture of what I'm talking about
It does this to random rows. If I execute the Fill method the first time, rows (5-10) will have these errors. If I execute the Fill method again rows 12-23 are affected and so on. I have no idea what is happening here.
This is effected my DataGridViews, because they don't display any rows, because of the erros. I should also note that when I run the lines of code below in the Immediate Window it says the DataSet doesn't have errors.
how the various elements that help you handle errors work together. Have tried several options and can't make head nor tail of it. The underlying table has two columns, an autoincrement integer and a text column with the following settings:
Is it possible to check the code and find all places where conversion errors might happen.for Ex: Wherever = operator is used , i have to check the type of the LHS and RHS variable.
What should i research in order to accomplish this task?
I am using MS-SQL & VB.Net
I have a SQL table that stores startdate and enddate. I want to run a query on that table every 10 minutes in order to check if the enddate is greater than today and if it is I would like to add a 1 to another column if it is not I would like to add a 0.
I have an access database and have a simple query in which i have 1 parameter.I want to run this query in vb.net and display the results in a datagrid or anything but in vb.net. I'm able to run the query but wht should i do to display the results of the query.the code i m using now is:
im calling a sp from vb net code that is rans for about 2 minutes and some times the user wants to cancel the query, how can i get the query id so i can sent the kill sentece?
I need to filter the database based on selected user input at runtime. I have a Drop Down List, GridView, and button on my webpage. The drop down list is bound to the database, it holds a list of product catagories. The gridview is also linked to the database with a query written so that the displayed data is only that which falls under the selected catagory. I want the query to execute when the button is clicked but i dont know and cant find such a command.
I've been using Classic ASP for years and just switching over to .net. So far, I'm not having much fun, but I'm trying and I'm not going to quit. One of the small pieces I am struggling with is running a query then, updating the record.
Where x would be the numbers 0 to 100, or infinite I don't mind. I want it to check all the numerical values for each number. How would I go about doing this?
I am working on a tool that will better manage the server applications I run on my server. I have a working version of what I need written in VB6, I've tried converting the code from vb6 to .net with no luck. Basically I have a few server applications I would like to display the status of, if they're running or not. Then with a few buttons to start/stop the application accordingly. I've found a few different code snippets across the web which I've tried to implement in to my project with no luck.
