[2008] Loop Through Datarows In Bindingsource?
Jan 23, 2009
I've got a bindingsource that has a datasource of a datatable
capabiltiesBS.DataSource = vendorBAL_C.capabilitiesTable
And that table looks like this
Select VendorId, Capability, LanguageFrom, LanguageTo From VendorCapabilities_T
At any rate - I do this to filter the binding source and then thought I could loop through the datarows and fill a tree view with them
capabiltiesBS.Filter = "VendorId=" & VendorId
For Each cdr As DataRow In capabiltiesBS.List 'vendorBAL_C.capabilities.Table.Rows()
[Code]....
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Feb 4, 2009
I am trying to insert the rows from a datagrid(populated by a datatable).
For Each rowItem As DataRow In dt.Rows
cmd.CommandText = "Insert into table (INVOICE_AMOUNT, DAYS_INVOICED_FOR) values ('" & dt.Rows("NEW RENATAL FEE") & "', '" & dt.Rows("NEW RENATAL FEE") & "')"
[code].....
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Mar 2, 2012
how to make DataRows in a DataTable ReadOnly? You can set DataColumns ReadOnly, but not DataRows?
I'd like to bind a DataRow ReadOnly property to my DataGridViewRow ReadOnly property. So when my DataGridView displays the underlying DataTable, if the DataRow is ReadOnly then the DataGridViewRow would automatically be ReadOnly as well. how to do this other than the way I do it below?
For Each r As DataGridViewRow In Me.dgvCurrent.Rows
If r.Cells("curAnalyteID").Value <> Me.cbxAnalyte.SelectedValue Then
Me.dgvCurrent.Rows(r.Index).ReadOnly = True
[Code]....
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Aug 16, 2009
I've made DataGridView on my Form1(data from database i've made). And i did an event,when someone doubleclicks that row marker(that left side empty cell,when you mark all row) it opens up my Form2. I can't find a way to export those vallues(strings) in cells of selected row to my Form2,so i can use them there.
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Oct 27, 2010
I'd like to partition my search results (which is in a DataTable) into groups of say 100 so the user navigates through them a chunk at a time.I thought I could bind an array of DataRows to a DataGridView as the DataSource but it just does not work. This is the code I tried
DataGridView.DataSource = (From r In DataTable.Rows Skip 200 Take 100).ToArray()
I'd like to stay away using the DataGridView's VirtualMode.
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Jun 15, 2010
I am trying to use the Select on a datatable and am having some trouble. I got it to find a match on rows in a datatable I fill with data in multiple columns. But I cannot seem to loop through the results to do something with it. Here is my code below. The table is already filled with data.
[Code]...
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Apr 20, 2011
i have a many-to-many relationship table in a typed DataSet.For convenience on an update i'm deleting old relations before i'm adding the new(maybe the same as before).Now i wonder if this way is failsafe or if i should ensure only to delete which are really deleted(for example with LINQ) and only add that one which are really new.
In SQL-Server is a unique constraint defined for the relation table, the two foreign keys are a composite primary key. Is the order the DataAdapter updates the DataRows which RowState are <> Unchanged predictable or not?In other words: is it possible that DataAdapter.Update(DataTable) will result in an exception when the key already exists?
[Code]...
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Jul 29, 2011
How to write xml foreach datarow in dataset? I have dataset with 5 record in table, i want write to xml file with 5 xml file. in one xml file have one record.
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Feb 13, 2009
I want to set the DataSource Property of a listview and of a combobox to an array of datarows.
This is the Code:
[Code].....
The 'Name' column does exist, but the ComboBox shows only the type of each datarow not the contents! If I set the datasource to a datatable, the correct column is shown in the combobox/listview.
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Dec 1, 2010
I'm trying to flag a record as deleted by clicking the delete button on my bindingnavigatordeleteitem button.
The code is:
Private Sub BindingNavigatorDeleteItem_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles BindingNavigatorDeleteItem.Click
code:.........
The error is "Deleted row information cannot be accessed through the row"
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Jun 12, 2011
Private Sub LoadMovieDetails()
Try
Dim cmd As SqlCeCommand
[code].....
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Sep 28, 2010
Maybe i'm missing something, but how can i make my application to save the value that i use to replace the null values that exist in the database?Let me explain i have a form with several textboxs to let the user enter/edit some data. At the first time the user opens the form, the are some fields in the database that are null, so i use one of the overloaded versions of the control.databindings.add(), and set default values for those fields.
My problem's when the user clicks save without changing any of the default values, i can't detect any changes to the datatable, so the update method doesn't update anything.
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Dec 23, 2009
I have one simple questionWhat's the code for deleting one row from Database using BindingSource and DataSet? Just like from BindingNavigator.
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Oct 17, 2010
I have a dataset (dS), adapter(aD) and bindingsource(bS) I am using in a form. The datasource for bS is dS, and I am filling the adapter in the form's Load event with a table (tbl) from the dataset.
On the form I have a listbox and a textbox with the following properties set
[Code]...
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Nov 4, 2009
I am trying to see if producttextbox.text (getting ready to be entered) is duplicated in the DB. I have searched and search and typed some code but nothing is working. Code shown is so far the closest.I do get the NO MATCH message box now although it is a duplicate record. At least I know I am getting somewhere...
Public Sub ValME()
Dim dv As New DataView(FSC_DATADataSet.PERS)
dv.RowFilter.Contains(ProductTextBox.Text)
[code].....
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Oct 17, 2009
I'm using a bindingsource to bind a dataset to a datagridview. Normally I would use a dataview to sort and filter the data, but since a bindingsource can also do this, I figured I would not need a dataview anymore. But I'm not sure how to get certain data from the filtered source. I know I can get it from the datagridview, but I'm not loading the entire dataset into the datagridview. I guess I could and then just make the columns I don't need be invisible. Or I could go ahead and use a dataview also, but that seems redundant. I was wondering if there is an equivalent to this code to get a specific item from a dataview, but pulling it from the bindingsource:
tbCode.Text = dv.Item(m_recno).Item("CodeNo")
As long as I'm not filtering the data, I can get it from the dataset, but when it's filtered, the indexes won't match.
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Apr 12, 2011
tried in many ways and I know that very soon will succeed. at least I am very resourceful showing that ...... Please help me correct this code. because the DataGridView throws I query the data are in the range of dates
Option Explicit On
Option Strict On
Imports System.Data
Imports System.Data.SqlClient
[code]....
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Jul 12, 2009
I'm trying to fill some textboxes programmatically after clicking the bindingnavigator add button but the textboxes wont fill..Using the listchanged event of the bindingsource doesnt work neither..[code]
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Jul 27, 2011
I have work with BindingSource in VB NET 2008
--
dim bsA as new bindingSource
BsA = DB
DataGridView.dataSource = bsA
[code]....
but data has changed this is correct ?I don't wont change this data what I have to do ?
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May 5, 2009
I datagridview and I populate it using a bindingsource. I have the following code in the bindingsources PositionChanged event and it works as I want it to except when I filter the bindingsource.
Private Sub ProductBindingSource_PositionChanged(ByVal sender As Object, ByVal e As System.EventArgs) Handles ProductBindingSource.PositionChanged
If (Me.ProductBindingSource.Current IsNot Nothing) Then
Dim dr As DataRow = CType(Me.ProductBindingSource.Current, DataRowView).Row
Dim ProductId As Long = CLng(dr.Item(2).ToString)
Dim ResultId As Integer = CInt(dr.Item(0).ToString)
GetReport2(ProductId, ResultId)
End If
End Sub
The scenario is when I click on a row in my datagridview the bindingsources positionchanged event fires and I load a crystal report. Problem is when I filter the bindingsource, even though the first item in the grid is now different the incorrect report is displayed because the bindingsources position hasn't changed.
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Dec 8, 2009
I populate a datagridview using a bindingsource and dataadapter. So I join 3 tables in the view to get the data i need.
so I have my view as a child table in my dataset. and a table called classes which is the parent table. So when I select a Class(class 1A for example), my datagridview displays the pupils in that class.
Now i need to add another relationship in the dataset. so when I select a day in a monthcalendar, I need to add 5 checkbox columns for each day to my datagridview. Should I add these 5 columns to my datatable? i'm not sure what the best way is.
Then for each day I tick I have to save to my pupil_job_day table. I will save the peoleid,their accountid and the date. please help me
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Jun 25, 2011
i am currently working on a database project using Microsoft Access 2007 and VB Express 2008.my problem is, i want to create a searching function in one of my tables; table Coachee. I know that it is possible to search data using bindingsource.filter as i've already succeeded in doing that. The thing is, how do i actually prompt a messagebox saying that the record of the Coachee ID to be searched is not found? [code]
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Aug 11, 2009
I assigned an integer as 1, and looped my program using:[code]I can recieve the packets without looping, but once i loop, i receive nothing.
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Feb 19, 2010
I have added a handler in my code for the bindingsource currentchanged event: I have populated a datagridview. AddHandler PeopleBindingSource.CurrentChanged, AddressOf ChangeHandler then on the ChangeHandler Sub I populate an HTML report. However I don't think this is the best event to handle this. I have to datepickers on my forma as well. So say I click on a row in my dgv, that persons report loads. Then I change the start date on my datepicker,
Now i want to click on that row again to refresh the data, but since the currentchanged event doesn't fire the data won't refresh. I have to click on another row then click on the row I want to view in order for the event to fire. which event is best to do this?
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Jan 14, 2009
im dr As DataRow = CType(Me.ProductBindingSource.Current, DataRowView).Rowbut I get the error saying:
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Jul 16, 2011
I have a database with a table that is a child to many other tables. I am using this child table as a datasource for a datagridview. I am using comboboxes to display specific fields in any parent tables, instead of the user seeing the foreign key. Everything is fine. However, I would like to filter the BindingSource based on text matches between any of the fields in the child table and the corresponding fields of the parent tables.
[Code]...
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Nov 4, 2009
I have a datagridview binded with a bindingsource with all the options of editing,saving,deleting enabled.But i am unable to understand the problem that is why the data from my datagridview is not getting saved.This is the code which I am using
Private Sub frmDvdMovieData_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
'TODO: This line of code loads data into the 'Library.category' table. You can move, or remove it, as needed.
Me.CategoryTableAdapter.Fill(Me.Library.category)
[code].....
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Mar 14, 2011
Makes the following statement about the code below:
**"The computer evaluates the loop condition in the Do...Loop statment to determine whether the loop instructions should be processed. In this case, the inputsales <> String.Empty condition compares the contenst of the input sales variable to the String.Empty value. As you know the String.Empty value represents a zero length, or empty, string if the inputsales variable is empty, the loop condition evaluates to True and the computer process the loop instructions. *If on the other hand the inputsales variable is not empty, the loop condition evaluates to false and the computer skips over the loop instructions.
Based on the code I think it is the opposite: ...that while the inputsales value is not empty it should evaluate to true and process the loop and if it is empty it should evaluate to false and skip the loop?
See below.
Option Explicit On
Option Strict On
Imports System.Globalization
[CODE]...
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Apr 8, 2009
I am getting array of selected datarows from a datatable.select.I use the commands below to get that array or datarows
Dim foundRows() As DataRow
strExpression =
Here is what I tried.I have looked at examples by MS but they all just write to the screen and I have no interest in that.
For Each rowWork In foundRows
dtWork.Rows.Add(rowWork)
Next[code]....
"LineOfBusiness = 'CPP'"
foundRows = modXchange.pdtWork.Select(strExpression)
Now, I want to place the rows from foundrows into an empty data table.I did what I thought was the obvious but that only returns a bunch of rows with no data
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Mar 20, 2009
I am trying to filter the results of a datagridviw using the bindingsource.filter method.
Dim filters(2) As String
...
If Me.txtPartIDFilter.Text = "" Then
[code]....
The issue is in the last line. ID_Part is an Int64 data type filters(0) is a string so the system returns a "Can't perform 'Like' operation on System.Int64 and System.String" error message.As you can see I tried converting the data type, but that failed since it is encased in String.Format()- it's going to be a string no matter what, I suppose.It's almost 1:00 a.m. so I'm not firing on all cylinders.
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