Data Adapter on VB.NET. I'm having a problem with retrieving data on different tables.
Example database: BookInfo[INDENT]BookID: HSD993Z
Title: Introduction to SQL[/INDENT][INDENT]BookID: LDJA293
Title: Advance Computer Programming[/INDENT][INDENT]BookID: KSKL194
[code].....
rsReturn = New DataSet()
objCommand.CommandTimeout = 240
Using objadapter As New OleDbDataAdapter(objCommand)
[code].....
I created a new query in the dataset designer. There are now 2 queries there. The original one and the new one.I also added named parameters in the Where clause of the 2nd query.This is the query in the new one:
SELECT ID, FatherName, MotherName, EmergencyContactName,
EmergencyContactRelationship, Address1, Address2, City, State, Zip,
PrimaryPhone, SecondaryPhone, Emaile.
[code].....
I have a datasource linked to a table in a database.When I wnated to display this data on a form, I just dragged the datasource onto the form and it did everything for me, including the code to fill it;
Me.ProjectFileTableAdapter.Fill(Me.ProjectFileDataSet.ProjectFile)
My problem, is that this program will have multiple users, and I don't other users to be able to see each others data. So the problem with the above statement is that it fills the table with ALL the data in the datasource. How can I make it only display data that is for a specific user?Here's the code that is used to fill the tableadapter:
Private
Sub
frmViewCurrent_Load(ByVal[code].......
I get this error if one of my database field is greater than 120 characters. The DB is set for 150 Char text.
When the form is loading here is the line that errors[code]...
I have a database with around 100 columns and when i go:
[Code]...
The code works fine with a smaller database, so i was just wondering the problem is that the database is too big and the adapter isn't able to handle such a long query. I was just wondering if anyone knows what kind of limits there are?
I have the following query that executes when my form loads. It's the rowsource for my combo box. The query is fine and populates the combo perfect, however, when i click into the combo box I cannot click out of it or even close the form. I have tried taking out the line of code that fills the form via table adapter on load and it works fine (opening the form unbound by the main table). Has anyone run into this before? I have another combo box on the form setup the exact same way and this is not happening. I've experimented with different datatypes etc....
code to populate combo box:
Public Shared Function LoadCallSource() As String
Dim sConnectionString As String = "Provider=Microsoft.Jet.OLEDB.4.0;Data Source=C:Documents and Settingsdiw07My DocumentsDaily Backupsphone memo backend.mdb"
[code]....
If I take out the line
Me.MemoTableAdapter.Fill(Me.Table_Memo.Tables("Memo"), intMemoID)
The Combo boxes do not act up or "Lock"
i have problem when i generate my program the program takes time till in my datagridview from table adapter in which i already create in a dataset any way how to make the program fill the records faster and decrease the loading time when fill in the datagridview? [code]
View 1 RepliesI've always been curious on how ADO/OLEDB/SQL method/functions does their fill method? Like
asgfa
Dim tTable as New Datatable
Dim iAdpt as New SQLDataAdapter(CommandString, ConnectionString)
[code].....
I fill a dataset using fill() method of sqldataadapter. The select query call a user defined function in it. My problem is that when I run this query in sqlDataAdapter , the fill() method take about 70 Sec. to give output but if I run the same query in Enterprise Manager or in Query Analyzer it gives output within a 1 or 2 Sec.
View 2 Replieswhen i try to insert data from database into dataset using data adapter, it takes long time, i want to use hourglass but i'm confused how or when i type the code so user will know that application still work.
View 1 Repliesi am trying to join 2 tables together and display them in a list view. i have this code so far
[Code]....
The GUID is the SelectedValue of a ComboBox (cbNetwork) If I execute a Debug.Print on the cbNetwork.SelectedValue, I see:
645b9d20-23eb-469e-9faa-e287600a54f3
However, when I try to execute the Fill method of the DataTableAdapter, I get an error "Specified cast is not valid."
[code].....
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.
?Me.ds.Tables("Current").HasErrors
False
?Me.ds.HasErrors
False
I have already defined in my SELECT statement in TableAdapter to tell it what to do if the parameters are Null:
SELECT a.ID, a.NameID, b.BNameID
FROM a INNER JOIN b
ON a.ID = b.ID
WHERE ((@NameID IS NULL) OR (a.NameID = @NameID))
AND ((@BNameID IS NULL) OR (b.BNameID = @BNameID))
VB.Net 2005 SQL server 2005
I have a project I have a dataset that contains tables In the dataset designer, each table has a defaiult FILL command set. I have draged and droped my table as a grid onto my form VB automatically sets up the table adapter, and binding source to make it all work.
in my code, is placed in the form load routine, a tableadapter.fill(dataset.datatable)
Here is my dilemma. The data in my table may have 100's of thousands or rows.
I have presented the user with a front end that allows for filterring and selecting based on several columns. reguardless of how many rows the result set contains, there will always be the same columns in the dataset.
Because there are so many combinations of select query, i do not want to make 20 or 30 custom fillby's in the dataset. I want to make an addhoc select query and have the binding source and table adapters work as expected. I have created a query called "FillByCustom" in the dataset designer attached to the DataTable Adapter section.
My question is this.
If i build a select query that returns the desired rows, how do i place it into the adapter in place of the FILLBYCUSTOM select command, such that it all works as expected?
I have a windows form program that pulls data from a sql server. That same data is being read from a ASP.NET website that sets properties for the site. The SQL server has 3 tables: tblWebPage, tblObjects, tblProperties. and 6 views for the 6 web page: vWebPage01, vWebPage02, vWebPage03..ect. When the program loads you see buttons for each web page on the site. When the user clicks on the Home Page it loads this data: [code]Now, the problem lies in updating vWebPage02, vWebPage03, ect.. I assume with the same data I can copy my form with the code and change the form name and the data set to build and update. So that's just what I did changed the form name where needed and changed "vWebPage01" to "vWebPage02".When I tested the program My "vWebPage01" form it built and updated no problem. when I went to test "vWebPage02" it built the dataset and table adapter fine but it did not update at all.
View 1 RepliesGetting data from csv. Works fine and has done for ages. Problem is when data is in the form of 'SS01' up to SS09. datatable shows as 1.000 for SS01...Any other data is read fine.
Dim Conn As System.Data.Odbc.OdbcConnection
Dim da As System.Data.Odbc.OdbcDataAdapter
Dim strConnstr As String
[code]....
Does this work the way I think it should?
Private _adapter As New SqlDataAdapter("Select CaseId, CaseNum, DateLoaded, Status1, DateDiff(mm,DateLoaded,GetDate()) as mm From Case_T" _
& ";Select CF.CaseId, CFV.VendorId, CFV.DueDate From CaseFileVendor_T CFV Left Join CaseFile_T CF on CF.FileId=CFV.FileId" _[code]....
i'm using vb 2008 and local database sql server compact 3.5 to build a application.the problem is that i can't insert a new data to the database from the app. i'm wrote the query right at dataset and using table adapter. but when i call the query, it succeed but the data don't exist at database.why when i add data, it's not working. actually when i run it, it says that adding process is success, no error, and it shows at the datagrid. but when i look at database. the data that i add is not there.and in tableadapter, i also make sortData, seachData query, i can use both of them perfectly when i run the app.so, i really confuse why is the insert query didn't work.
View 2 RepliesI'm confused with this piece of code listed below. This code calls the update method of the dataadapter object to save the changes made to the dataSETback to the database itself. What I don't understand about this code is that it creates an update command(cmdUpdate), insert command (cmdInsert) and delete command (cmdDelete). My understanding is that the update method saves the changes back to the database. So I don't understand why the author creates these additional commands.
View 6 Replies[code]when I run my program and press this button Private Sub Button2_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles exceptionsButton.Click..I have my date range within a time that I know that my dataset should produce a result, but when I put a line break in my code here: adapter.Fill(ds)and look at it in debug, I show a table value of 0. If I run the same query that I have to produce these results in sql analyser, I see 1 result. Can someone see why my query on my form produces a different result than the sql analyser does? [code]I can also verify that the variables are passing the correct values. Can anyone please assist as to why this isnt working?
View 1 RepliesI have the following
Imports System.Data.SqlClient
Public Class Main
Protected WithEvents DataGridView1 As DataGridView
[Code]......
I have the following code:
Code:
Imports System.Data.SqlClient
Public Class Main[code]....
and when I run my program, I have my date range within a time that I know that my dataset should produce a result, but when I put a line break in my code here:
Code:
adapter.Fill(ds)
and look at it in debug, I show a table value of 0. If I run the same query that I have to produce these results in sql analyser, I see 1 result. Can someone see why my query on my form produces a different result than the sql analyser does? Also here is my schema for my two tables:
Exceptions
employeenumbervarcharno 50 yesnonoSQL_Latin1_General_CP1_CI_AS
exceptiondatedatetime no8 yes(n/a)(n/a)NULL[code]......
I have an application in which i have to load the grid using MS Excel and save that excel to Sql Server.
View 2 RepliesHonestly I do not understand why I need to write code to update a databse and why it stores it localy. I'd simply rather the system update the individual row after it is scrolled off of.
In either case since I guess I can't do that.
Here is some code in a button on a form
Try
ItemsTableAdapter.Update(NewCreationsDataSet1.Items)
LineCodeTableAdapter.Update(NewCreationsDataSet1.LineCode)
Catch ex As Exception
[Code].....
I am trying to catch an error while dimensioning the DA (SQL Data adapter)Have not used Try ..Catch so pls bear with me for this juvenile crime!
Code:
Try Dim da As New SqlDataAdapter Dim ds As New Data.DataSet If conn.State <> ConnectionState.Open Then conn.Open() da.SelectCommand = New SqlCommand da.SelectCommand.Connection = conn
Catch ex As Exception MsgBox(ex.Message)Finally 'conn.Close() ' endEnd Try What I am trying to do is the catch the "object not set to an instance of an object error" and if caught I want to continue.I would like to know what to add in the Finally section?I have not tried this I would like the gurus for any inputs before I try it in my program.
how to connect the oledb data adapter in vb.net 2005?
View 11 RepliesIf you are creating a new adapter, drag a data adapter object from the Toolbox onto a form or component.
I cannot find Data Adapter object anywhere in the toolbox. I assume it would be under the Data grouping, but it is no where.I also "Reset ToolBox" and it is still not there.
Hoping for some advice, probably an easy question for most people on here but I'm a mere learner. Basically, what would generally be the reason for using a Data Set via adapter rather than just connecting to the database directly using an SQL connection?
View 2 Replies