I populate a datatable using a dataadapter. the select query pulls data from a view in which I combine multiple tables. Now I need to run different update statement etc to update each table. foe example I will update balance field in the accounts table using one query and another to update days present etc.
how should i do this? must i loop through each row in my datagridview?
I have a vb6 code block
Private Sub CmdSave_Click()
On Error Goto LblErr
con.BeginTrans
[Code]....
i need expert opinion on saving data to database though efficient method/professional approach.I'm saving data using following code.[code]There are some other ways like, use Insert query, i want to know does above mentioned method take too much resources, or make db unnecessary busy
View 1 Repliessaving data from a text field and multiple combo boxes to a file on a server in visual basic 2008
View 1 Repliesrewriting a class I use for saving Treeview data to a XML file for use of saving ListView data I can't really figure out the rewrite, I'm stucked, unfortunately Listviews seems to be a big problem for me in general.
Option Strict On
''' <summary>
''' The TreeViewDataAccess class allows the nodes within a TreeView to be
''' persisted to xml for later retrevial.
''' </summary>
[Code]....
Saving all data from data grid view in vb.net 2005 into sql server 2005 database table.
View 1 Replieswhy it says connection has not been initialized ?
Public Sub save()
Dim con As New OleDb.OleDbConnection
Dim adapter = New OleDb.OleDbDataAdapter
Dim cmd As New OleDb.OleDbCommand
[code]....
have a datagridview containing 2 tables left joined, so that:table1 LEFT JOIN table 2 ON table1.id=table2.idI get an error whenever I try to edit my datagridview."invalidOperationException was unhandled by the user codeDynamic SQL generation is not supported against multiple base tables."The error points to this line:
da.FillSchema(dt, SchemaType.Mapped)
da.Update(dt) << This line
'da = dataadapter
[code].....
I fill DataSet from Access Database then create Datagridview to display data. My problem is how to Save Data back to a different table in Database then the one used to create the DataSet? I'm using Visual Studio 2008 and Visual Basic 2008.Original Table used to fill DataSet is called RecordList the new Table will be RecordListReport.
View 8 Repliesi am going to be saving data with DPAPI encryption. i am not sure whether i should just have one big file with all the data or should i break up the data into separate files, where every file is its own record. i suspect the entire dataset would be less than 10mb, so i am not sure whether it's worth it to break it down into about a few hundred separate files or should i just keep it one file?
View 2 RepliesI have a sign up sheet that I am creating for a project I'm working on and the sign up sheet works and I can enter all my data into the text fields and save the info but when I go to open the file again all the data is pushed into one text box and not in their own fields?
If there a trick in the SaveFileDialog that I can use to save each field to file then open them back in their own field?
Here's a screen shot of the before and after the program [URL]
And here is code behind the Save button [URL]
How to insert multiple data into mssql without using loop?
i'm developing a clinic management system, while doctor may give few medicines to patient,therefore i hope inside my database,the data will look like
[Code].....
this is my 2 tables, i hope when storing data ,the recordID will not increase based on how many ItemID inserted.
i am creating a system where when a command button is pressed, it adds the data corresponding to that command button to a Table of the screen. And basically im at my wits end at how to do this, i have tried using SQL and databases but all i seem to be able to do is type data into the table and this is not what i want.Basically the table has 3 columns at the moment, which are filled in column at a time, and this need to be done by pressing command buttons. To explain this basically there are 8 buttons, which can be pressed to enter into the first column, once one of these buttons is pressed and second set of buttons appear which correspond to the second column and after one of these buttons is pressed the 3rd set of buttons appears to enter into the third column.Once the last button is pressed that is the first row filled in and the user can again press a button from the first set. Its basically a system for rapidly entering data into this table through the corresponding buttons.I have the buttons appearing and all that working fine, but thats basically just the layout. I need to know how to enter the data into the table.i have to use a SQL database, i only added that as at the end of the session, the entire table of data needs to be added to a master database but i can attempt this at a later date.
View 12 Repliesvisual basic 2008 express
access 2007 db
I am attempting to fill a form with multiple rows from an access table based off of a parameterized query. My query works fine but I don't want to return one row at a time, I want to return all rows that match my query in multiple text boxes. I know that I can use a datagrid view to accomplish this, but I would prefer the look of a textboxes on a form. I have read through many books and searched the internet forums but think I may just not know what to search for as nothing has worked yet. Can anyone point me in the right direction. So far I have tried setting the text box value to the row().item(), creating a different dataset for each row, and even setting variables for the results of the query to then be passed to the text boxes. Since none of this work, I don't really have any starting code to post. If I could just get a starting point I could work from there, so don't feel the need to code anything for me, just set me in the right direction.
I have 3 tables. customer,item, pricing, each with keys customerid,itemid,priceid. pricing is related to customer and item tables by a 1 to many.pricing (priceid,customerid,itemid,price)
[Code]...
I am trying to understand how the binding navigator buttons are actually working.
I started by creating a table called "Students" in MS Access,
I then "dragged and dropped" that table onto my VB form after importing the data connection.
When I debug, I click the add new (the yellow plus "+") then I type info into my fields (700_Number, First_Name, MI, Last_Name). (700_Number=Primary Key)
After I am finished typing into the four text boxes, I click save. If I end my program then start the debugger again, the record is still there...it goes away only if I change some of the code anywhere in my program.
Also, I am trying to use the record I just put into my database for another part of my program. I use this line of code:
MsgBox(frmAddStudent.DrByrdsTaskListAppDBDataSet.Tables("Students").Rows(0))
This is just to see if what I am trying to put into my database is actually making it there. Every time I run, this message box turns up blank.
I added a DVG to the form. Then I clicked on the small box and selected a data source through the design screen. I chose the connection and then the sproc to get the data. This all works fine. That was added in the Load sub automatically. I will make changes to the cells by code rather than allowing the user to change the cells themselves. Then I want to click a button and save the changes to the table. Everything I have tried does not work.
View 7 Repliesif it affects the run time of a program if I were to have multiple data tables as opposed to one data table with all my data in it? I am trying to minimize datagrids and just use code to access table data, in hopes that it will speed up my program. But I am ignorant if multiple tables vs 1 main table will make a difference because there will still be the same amount of overall data present in my program one way or the other....?
View 3 RepliesI export table from my db into Excel. So that every time I save the table, I don't overwrite the previous version I want to save the Excel file as date and time.[code]Conversion from string " & application.startuppath & " to type 'Long' is not valid.
View 2 RepliesI export table from my db into Excel. So that every time I save the table, I don't overwrite the previous version I want to save the Excel file as date and time. I currently have this.
View 2 Repliesmy system is kinda doctor gives prescription and medicine, and store related information into database. The case is when a doctor give few medicines to patient, those information have to store in a "RecordID" with few"ItemID" [Code]. anyone knows how to solve my problem, or any similar sample project can give me to refer? [Code].
View 4 Replieshow to execute this SQL Statement
Scenario:
Given Tables T_Data, T_AllDesc, T_System1, T_System2
Given Fields:
T_Data= f_id, f_Desc, f_CreationDate, f_CreationTime, f_System1, f_System2
[Code].....
This is the Query:
DELETE FROM patientpersonal,patientmedical,patientdental
WHERE patientpersonal.'" & dpatientid & "' = patientmedical.'" &
dpatientid & "' AND patientpersonal.'" & dpatientid & "' = patientdental.'"
[code].....
I'm trying to create a simple Data Grid that will automatically save changes. So far I have a data grid connected to a MS Access 2007 Database that reads the data. I can create new fields in the Data Grid, but I need to program to save the data automatically to the database on update (or on close).
View 6 RepliesI am combining data from multiple tables into one table for a presentation software. I am doing a select statement and running a loop. Inside that loop I have multiple selects and I build a datatable an enter the data into the main table. There is a ton of records and it takes forever.
'Requisition Demands
InsertStr =
"SELECT COUNT(*) FROM Requisition WHERE (DMD_DT = " & dateVal & ") AND (QTY_REQ > QTY_PEND_CANC + QTY_CANC + QTY_REJT) " & searchvalString
[code].....
Bind multiple combo boxes to same data table with minimal code
View 19 Repliesim added a dataset inside my project, and inside the dataset i added a DataAdapter with the steps like below:Use SQLStatement --> select A,B from tb_example --> Fill a datatable.And then i bind one of my combobox datasource's display member = Avalue member = BAnd its work properly!After few weeks, im reopen the project and i try to add another new dataadapter in the previous dataset and a new combobox like steps i did before. When i come to the combobox and try to find the datasource in combobox's properties and i cant find the dataadapter i jz added.
View 7 RepliesHow to insert data into access database using dataadapter?
View 1 Repliesim having some problems using the data adapter. i tried a statement select 1'test' but when i do adapter.Fill(dataset, "tbl1") and tried to read the value from the first row in tbl1.hen i do row(0) i can retrieve the value. However if i do it by the name like sayrow("test") and i would get a dbnull.
View 9 Repliesi am trying to update database with updated data in data adapter. here is error message. "Update requires a valid UpdateCommand when passed DataRow collection with modified rows." here is my code.i get this error when i try to update dataadapter with following line.
[Code]...