Reasonable Use Of A Dataadapter In A Class?
Jan 17, 2009[code]And the database is being updated.Is this a good use of a class for this really basic purpose?
View 5 Replies
ADVERTISEMENT
[2008] Is This Reasonable Use Of A Dataview
Jan 17, 2009This is a continuation of this thread...
[URL]
So - is creating a DATAVIEW like this in a class doable? Then when the DATATABLE changes the DATAVIEW is always kept freshly updated?
Public Class caseBAL
Private _connection As New SqlConnection("Server=fps-lap-szsqlexpress; Initial Catalog=Casefiles; Integrated Security=SSPI")
[code]....
C# - Is It From A Sight Of Resources Reasonable To Use A StringBuilder Already To Concat Two Strings
Jul 9, 2010Is it from a sight of resources reasonable to use a StringBuilder already to concat two strings or is there a minimum concatenation operations that makes the StringBuilder efficient?
View 4 RepliesAdd New Row To DataGridView Without Using DataAdapter?
Jan 19, 2009Code to add a new row to my datagrid on click of add button. I am not binding my grid to a datasource.I m fetching values from the database through a datatable n then through a lood inserting t values to my datagrid. i m not binding the entire datatable as my datasource for the grid.
View 2 RepliesDataAdapter UpdateCommand?
Mar 6, 2009I have 2 datagrids. One to show Product information and another for Product purchase details entry.Both share the same dataset. The dataset (ds) is filled up with columns from 2 table
ProductMstrTbl : ProductID, ProductName..
ProductDetailsTbl: ProductID, PurchaseDate, Amt, BalanceQty..
[code].....
Using Transaction Then SQL DataAdapter
Jun 12, 2011I'm having a hard time on using Transaction then after that I need to use sqldataadapter. When I tried the code below I'm having an error "ExecuteReader requires the command to have a transaction when the connection assigned to the command is in a pending local transaction. The Transaction property of the command has not been initialized." Pointing to this block.[code...]
View 1 Replies.net - How To Alias In Dataadapter Query
Aug 21, 2011I 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?
View 1 RepliesAdd Another New Dataadapter In Previous Data-set
Mar 17, 2009im 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 RepliesAsp.net - Add Parameter To DataAdapter.fill()
Jul 20, 2011I am trying to add a parameter to a sqlDataAdapter. I have tried to use parameters.add() but the adapter is not a sqlCommand. Here is some of my code.
Private Sub convertToCSV(ByVal SqlQuery As String)
Dim Dt As New DataTable()
Dim SqlCon As New SqlConnection("Data Source=db;Initial Catalog=productionservicereminder;User Id=id;Password=pass;")
[Code]....
Basically I am trying to do something like this:
Ada.Parameters.Add(New SqlParameter("@pgid", pgid))
Asp.net - Sort DataAdapter Alphabetically ?
Nov 30, 2010This should be a fairly simple one. I am creating a dataset which will contain a description field which I would like to sort by. The reason I want to sort the dataadapter and not in my SQL is that I am already ordering by the results that have a particular value.My SQL looks like this:
SELECT pif_desc, pif_fund, psf_end, (CASE WHEN SUM(pmi_units) IS Null THEN 0 ELSE SUM(pmi_units) END) As fundunits
FROM tbl_mem INNER JOIN tbl_sfunds[code]....
I want to sort the datarows is ds.tables(0) by pif_desc but still have the rows with fundunits > 0 listed first. how I can achieve the correct ordering.
DataAdapter Does Not Update A Record?
Feb 15, 2011I have been researching all that is related to DataSources, DataReaders, DataAdapters, etc, with an Access 2010 DB bound to a DataGridView.
Everything is fine, just one line fails and is driving me nuts Here is the code:
[Code]...
The line that fails, actually updates my database, but somehow, the update is not performed on the line that belongs to the first row of the grid. What is more, if I change the value manually, the same update method works fine. What is going on here?
DataAdapter Not Writing Updates
Sep 29, 2009I'm trying to create a form that uses controls that are bound at runtime. All the data objects are declared at the form level. The Select statement includes the two fields that make up the PK form the table. The Owing_Company data displays in the bound control. I can change the text and in Save_Click the RowState is Modified and Row!Owning_company has the changed data. DsForm.HasChanges is False. A simple call in Save_Click daForm.Update(dsForm) does not change the DB. If I update the Row!Owning_Company in code dsForm.HasChanges is now true and daForm.Update changes the data. What am I missing that allows changes made via the bound control to modify the DataSet?
[Code]....
Difference Between A DataAdapter And DataSet?
Apr 16, 2011Can you explain to me what they a
View 1 RepliesExecute SQL Command For A Dataadapter?
May 14, 2012Is there a way to execute SQL command for a Dataadapter rather than regular approach.
I i have parameters to pass to the SQLCommand. In he below model DAtaadapter at declaration itself we need to pass the SQL as string, and Conn. But i wan to send SQL Command to the adapter to execute instead command as string
Previously i have used to fill dataadapter as below
dbSource = "Database= DataBase;"
conn.ConnectionString = dbProvider & dbPassword & dbSource
If conn.State = ConnectionState.Open Then
[Code]....
Getting Error During DATAAdapter Update?
Dec 29, 2009I dont know where's my error.To begin with i have two buttons ADD and SAVE.My Datebase Name is COURSE where all its fields are text except courseid (number).when i click SAVE the only error is FAILED to convert parameter value from a string to Int32 exactly during dataadapter.update (ds,course)I am not converting any datatype or value to int32 .
Private Sub BUTTONSAVE_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles BUTTONSAVE.Click
MsgBox(" SAVING CHANGES....")
Me.Cursor = Cursors.WaitCursor
[code]....
How To Synonymous Between DataAdapter And DataTable
Jan 14, 2012I wrote a code as:
Dim dTable
As
New DataTable
Dim dAdapter
As SqlClient.SqlDataAdapter
[Code]...
My Problem Is that when i Update Table thought dataadapter but Table didn't get auto-increment ID. When i reload the from then i get all data. how do synonymous dataAdapter and DataTable during when i call dataAdapter.Update methor.
Instert Null Value In DataAdapter?
Jul 16, 2011I have to copy the contents of one row in a table to another row, there is no problem until the source has no image so its value is Null, which is allowed in the SQL Server database.[code]....
View 2 RepliesUpdate Not Working With DataAdapter
Dec 6, 2011I need to select some user datagridview settings (such as column width, column visible, etc.) from my database. Then I run a loop to change those settings. If any settings are changed I need to update the database. For some reason I can't get the code below to update anything. The code throws no errors when it executes, but when I check the database for the updates nothing is changed.
Public Sub pubsub_UpdateUserSettings(ByVal FormName As String, ByVal dgv As DataGridView, ByVal MethodID As Integer)
Dim adt As New SqlDataAdapter
Dim cmd As SqlCommand
Dim cmd2 As SqlCommand
Dim dt As New DataTable
[Code] .....
Using DataAdapter To Update MS Access?
Jan 24, 2009I am trying to make a little search system, so the user can enter a search parameter which then populate a DataAdapter, DataSet then DataGridView with the selected data then any change the user makes in the DGV are then commited to the MS Access (97) Database when a Update Button is pressed. This is what i have so far, at the minute it seems to populate the DA, DS and DGV but when i come to press the Update Button I get a pop up box with a long error message:
Private Sub btnSearch_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnSearch.Click
connetionString = "Provider=Microsoft.Jet.OLEDB.4.0;Data Source= " & frmMain.varDP_System
[code].....
VS 02/03 RETURN_VALUE In DataAdapter.InsertCommand
Jul 15, 2009In my form, there is a (design time) dataadapter. This adapter has got Insert, Update, Delete and Select commands. When the InsertCommand is executed, the data in the form are inserted (and saved) to the database.
The InsertCommand has a parameter RETURN_VALUE. The value of the parameter can be read by the follwoing code.
pDataAdapter.InsertCommand.Parameters("RETURN_VALUE").value
I want to assign the above value to another field in the dataset (say, SubscriptionNo) I use the following
pPKValue = pDataAdapter.InsertCommand.Parameters("RETURN_VALUE").value
pDataSet.Tables(pDataSetTable).Rows(0).BeginEdit()
[CODE]...
But, when I assigned the pPKValue, it raises the error, "Column SubscriberNo is Read-Only". How to rectify it? I like to set this as "NON Read-only" temporarily and after updating, again set to read-only.
VS 2008 - InsertCommand With DataAdapter
Mar 12, 2010what is the method to insert a row in a table using Insert-Command and a DataAdapter. I want to insert the row using SQL = "INSERT INTO table (f1, f2) VALUES (@p1, @p2)". [Code]
View 10 RepliesVS 2008 Insert Row Into DataAdapter?
Dec 1, 2010I have this code when my form is loading
PlanningMaterialLoadDA5 = New OleDbDataAdapter("SELECT JobPlanNumber, CompanyMaterialsID, CompanyPartNumber, Quantity, [Order] FROM tblCompanyMaterials WHERE JobPlanNumber=? AND [Order] =?", cn)
[Code]....
Access Query - How To Use DataAdapter With DataSet
Jun 3, 2011I 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.
View 6 RepliesBetter Way Of Filling A Generic List From A SQL DataAdapter?
Apr 11, 2009I have an existing application that uses Active Record for its data retrieval. It's in VB.NET (first time I'm doing VB.NET; I usually work in C#). And I'm building a method to return a List(Of T) of an object. The current pattern uses a SQLDataAdapter to populate a datatable. I COULD add the record to the List(Of T) as I fill the datatable, but there HAS to be a better way to do this.
View 1 RepliesC# - Where Does Dataadapter Will Find Its Sqlparameters Information From
Mar 29, 2011I have a table, I add a dataadapter to it and it has all the commands. There are lists of paramters for update,insert and delete. I wonder where does the Visual Studio find the related informatio on the size of the parameter? Since I believe it is reading from a wrong place or I did not set someting correctly. While the corresponding NvarChar column in dataset and database table is having the size of 20, in dataadapter it is all 0!
View 3 RepliesDataadapter Update Not Seeing Text Box Binding?
Oct 11, 2010I am using SQL Compact Edition and have a textbox binding to a dataset. When I enter something in the text box and try to update the datasource I get that the column Code in the datasource cannot be null. The textbox has a value so why is Code null?
Dim CONN_STRING As String = "Data Source=" & My.Settings.AutoCallPath & ";Persist Security Info=false;"
conn.ConnectionString = CONN_STRING
Dim myCommand As New SqlCeCommand("SELECT * FROM AutoCallDataTable", conn)
da.SelectCommand = myCommand
[code]....
DataAdapter Useful For Multi-user Applications?
Jan 24, 2011i need an app that can download a table from the db, and when he click a button, i want to update the db with his "offline copy".
Problem is When i use DataAdapter.Update, it doesn't update all the rows. Now this is a problem, because even if his "offline copy" thinks that row 1 is "unedited", some other user may have edited row 1. so regardless of row state, i need to so called "replace" the entire "offline copy" with the database when the user clicks the button in a "last click overrides all" situation
Editable Datagridview That's Been Databound With Dataadapter?
Nov 23, 2010I have an editable datagridview that's been databound with dataadapter and datatable, and a normal button on a form. When i edit the dgv's cells and click the save button it fires the datagridview_cellvalidating event and if the cell validation is correct it updates and saves the current record to the datasource. Also, before save it commits change in any cell under editing.But when I use a toolstripbutton to do the same work, though it saves the dgv records but doesn't update the current change i.e. it saves the old records that are being fetched when the dgv was populated first during form load. Also, clicking the toolstripbutton doesn't fire datagridview_cellvalidating, datagridview_rowvalidating etc events.
What it seems to be is it's not commiting the change in any cell under
[Code]...
Fill A DataAdapter From An Excel.xls Spreadsheet?
May 7, 2009There is no other workaround at this point, so here is what I am attempting to do:
1. Fill a DataAdapter from an Excel.xls spreadsheet.
2. TRUNCATE an existing SQLServer2005 db table that matches this excel spreadsheet.
3. UPDATE that SQL Table with the DataTable filled from the excel spreadsheet.
If there are anyother suggestions (OPENROWSET/DATASET is not possible for my situation, in or outside of a SProc),Here's the current dev point I am at --- no errors, but also the SQL table does not update.
[Code]...
Insert Data Into Database Using Dataadapter?
Jun 22, 2010How to insert data into access database using dataadapter?
View 1 Replies