I am using VB.NET 2008 and I want to delete an unused table from the dataset. When I do this I get error messages which seem to originate in the Table Adater Manager on the various forms. The only way I can figure out to correct this is to delete the table from the code after deleting it from the dataset designer. But it says that you shouldn't do this.
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I use a dbDataAdapter to populate a DataTable from an unlinked oracle database.I have a dbDataAdapter that I want to insert rows into an SQL Server table using SQLCommandBuilder.I have been trying all day to update the DataTable that references the SQL Server table with the data from the Oracle DataTable so that I can insert the rows.
View 2 RepliesI'm trying to delete a number of records in a table from the last and forward. My idea is to use sql like this: delete top " & variable & " * from table where ID = something It gives me a general sytax error. Is it at all possible? Fuga. Edit: I also have the order by statement there. I just forgot to put it in the question.
View 5 Replies*WeightCheck is a dataset connected to a mdf SQL server file..Datagrid on form is bound to the dataset..This code executes because datagrid on form updates with the deletions..[code]
View 1 RepliesI have a large form that is set up from master-detail datasets in Visual Studio 2008.I havene master table with a large amount of detail tables. Several of the detail tables also have detail tables linked.Now I need to add a master table that sits on top of my existing master table making it a detail table.
View 7 RepliesI have a project which contains a large number of lookup tables, and I have all of these lookup tables represented in a single typed DataSet, which contains TableAdapters for each lookup. I've designed an editor for these lookup tables, which should allow editing of one of these at a time. My front-end is written in VB and WinForms, the back-end is a SOAP web service; I can successfully pass the changes to the DataSet back to the web service, but can't find a way to use a TableAdapter to update the single table that has been changed.
What I'm trying to do is instantiate the appropriate TableAdapter for the updated DataTable by sending the name of the table back to the web service along with the DataSet, then referring to the TableAdapter with a dynamic name. The normal way to instantiate a TableAdapter is this:
Dim ta As New dsLookupsTableAdapters.tlkpMyTableTableAdapter
What I'd like to do is this, but of course it doesn't work:
strTableName = "tlkpMyTable"
Dim ta As New dsLookupsTableAdapters(strTableName & "TableAdapter")
Is there any way to achieve this, or am I taking the wrong approach altogether? My other alternative is to write separate code for each table, which I'd prefer to avoid!
How can I update local dataset with mysql database without making duplicates. Assuming I set some column in mysql as primary key, which has unique string.
adapter.fill will just add duplicates, but adapter.clear before that is not an option.
So I want to update if the key column is the same with mysql data and if there is option for ignore adding new row.
I have some concern about designing Datasets. I was told that it would be good to have a dataset for each table for maintenance purpose. Because frequent change in database tables is expected, having one dataset including every tables would be pain to make the corresponding change in the application.
Q. is it good approach to have a dataset for each table ( I would end up having 30~40 datasets for each db table using Stored procedure) ?
I have a separate project for commonly used datasets. each project include "dataset project" as a reference, and use it by including needed dataset into Forms, classes, etc.
Q. Does this approach makes the whole system to be slower? If I have a set of datasets as a separate project, it would be beneficial, since It will be easier to make a change (I only need to make modification in one place)
I want to know how to Update / delete the table records in ASPNETDB.MDF in single update / delete query ?
View 1 RepliesI have a dataset (WW1Dataset) with one data table(WW1).(database used in an access database) I'm trying to filter the dataset e.g a user wants to filter by a chosen surname (SurnameTextBox.text) so the datset is filtered to display only those records wherethe surname column in the dataset matches SurnameTextBox.text.
View 1 RepliesI created a DataSet in the DataSources section by accident but now I cant seem to be able to delete this dataset. How can I delete it?
View 2 RepliesI have customer/order form.When i delete a record from datagrid.It deletes the record but when i refresh the page or run the app again it comes because i think it just deletes temp from the grid not from the database.How do delete it from the database?[code]...
View 2 Repliesthis the code for creating new table in the same database
[Code]...
I am having the same problem <as this >> when i update my record in Access Database. It is successfully updated the record in the database. but the dataset in my project is still not updated. I am using vb 2005 to develop the application.
View 2 RepliesI'm currently trying to delete data from a dataset/datasource/database using visual basic. So here is the run down: I've built a program that can add, delete, and modify customer information from an Access database and I just got the add function working. Meaning, I can now add customers to the database and it is sticking to the database. I re-ran the program and even restarted the computer the computer and the data is in the database. This works fine. However, now I want to get the delete button working but I'm not sure why it isn't deleting some of the fake entries I made just to test out the add feature.Here is the code I am using:
Dim delCompany As UMD3.CompaniesRow
delCompany = UMD3.Companies.FindByCompany (NOT SURE WHAT GOES HERE)
delCompany.Delete ()
[code].....
i going to add, update and delete records on xsd file (i got this xsd file through Data Sources Tab, i add new data source my VG.mdb)
View 7 RepliesI am using UltraGrid for inserting data in table. The problem is that i need to do insert,update, delete with web service. I am getting dataSet from web service and display it into grid but when I do some changes on the grid for example insert or update data, I need also to send new dataSet to web service so that web service do update data.
[Code]...
I'm using Microsoft Visual Studio 2008 to create an application (.VB). The application connects to a Microsoft Access 2007 database. When the user starts the application, the application pulls in the data from the database via the "TableAdapter.Fill" method. The user can then add/update/delete records in the form and those changes are saved and confirmed in the database. The problem is when the user close completely out of the application and restarts it, the modifications that were made and originally sent/saved to the database are wiped/deleted. It appears that the dataset in the application never saves the modifications and when the program restarts it uses the data that was originally loaded into it during the design/build phase of the application.
View 3 RepliesI am trying to work programmatically with a dataset. The tableAdapter was created by dragging and dropping the dataset on my form, and then deleting the binding navigator and dataviewgrid. The problem I am having is when I am trying to delete a record that is DBNull. The dataset.delete( ) call creates fields for each of the fields, along with their data type (say Description as String). but I get an error whenever the field has a DBNull value.
CourseTableAdapter.Delete(DBDataSet.Course.Item(1).CourseID, DBDataSet.Course.Item(1).CourseDescription)
The error is Throw New Global.System.Data.StrongTypingException("The value for column 'Description' in table 'Course' is DBNull."I do have Option Strict On, but the problem exists even if I turn it off.
i am using visual studio 2005 and database sql server 2000. i want to read table of database and readed data insert in temporary table again update that inserted record.
View 3 RepliesHow to perform add, edit, delete in a dataset that will update the database as well?
View 1 RepliesI am creating a form that creates new users and then updates them to a dataset, I have done this ok, but I am getting a runtime error when I delete a record. Please see below the exception being thrown
"Update requires a valid DeleteCommand when passed DataRow collection with deleted rows"
My code below
CODE:
So I know I need to add a delete command, but how do I write this in code and do I write it in the saveitem click event? I guess I would because the app crashes when I click save to update the dataset.
I have a list box which is having column of an access table(say 'name'). If I selected a name n press delete the row of the corresponding name should be deleted from the table. Also The column which we are displaying from the table to the list box should be updated automatically. Note its a windows application using access table.
View 2 RepliesI can add a table to an MDB easily: i.e.
Dim cmd As New OleDb.OleDbCommand("CREATE TABLE [" + tableName + "] ([Field1] TEXT(10), [Field2] TEXT(10))" , con)
con.Open()
cmd.ExecuteNonQuery()
MessageBox.Show("Table Created Successfully" )
con.Close()
But is the a contrary "DELETE TABLE" command? I have never used one and can not find reference to one...
I am trying to use a data set to replace some objects i have currently got but wich are getting rather complicated. I have created my self a Data Set, currently simplified but am just learning ATM, I have normalised it as per basic understanding of databases.
3 tables
A Parts Table with 2 columns, Serial Number as the primary key and Data Inspected
A Feature Table with 2 coloumns, Feature Name as the primary key and Nominal
Data Table with Part Serial Number, Feature Name, Actual and a KeyColumn which is self incrementing read only.
Ultimately the Parts Table and Feature Table will have a lot more meta data that I will want to sort/filter. I would like a Data Grid Veiw or equivalent in WPF to show a table of all the data for all the parts, so features along one axis and parts along the other. Ultimately I would like to be able to sort/filter on both axis using different bits of meta data. I am aware of LINQ and DataVeiws, have had a play though not good at either, so far have only managed to get one column of data, so either all the data for one part or all the data for one feature.
I'm also aware of the Entity Framework though have no idea how to use it. So my question is, do I need to extract the table one column at a time? seems a bit inelegant, or is there a query or View I can set up to do this? or am I using completely the wrong tool? I know this might work in a fully fledged database but cant install/assess one on the machines to be used I need to keep it contained to the .net executable. If I need to do it as a loop am I right in assuming LINQ would be a better choice to put in a for loop?
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 ?
[code]...
I'm adding records to the table which goes fine until... I want to delete a row. The first time it said that the row was "read only" now I'm getting:
View 1 RepliesI want to do that ( whole content of table)?i remember not clearly, it seems using 'drop' table.
View 4 RepliesI wish to delete the contains of multiple tables, and I also wish to append the contain of table1 to table2 (both table1 and table 2 have the same exact fields and type).For the Delete, I have tried the following code and I have undefined errors for SqlCommand and CommandType.This is my code for deleting the contains of a table:
Dim queryString
As
String =
"DELETE FROM Buffer Table 1"[code].....
now my code is delete all the row with Itemcode. If i only want to delete one of my duplicated Itemcode row?textbox8 is connect to Itemcode column.
Dim del2 As String
If MsgBox("History Record Delete?", MsgBoxStyle.YesNo) = MsgBoxResult.Yes Thendel2 = "Delete from Receive Where Itemcode = @Itemcode"
[code].....
