Datagridview Bound To Bindingsource: Displaying Both Old Values And The New Values

Mar 23, 2011

I bound datagridview to bindingsource. The bindingsource has its datasource a collection Called Rates which is a collection of Rate items. The rate object has a property called VALUE. I need the user to be able to edit different values for the collection; However, on the datagridview, i need to keep displaying on one column called OldValue the existing Rate value before the change while allowing the user to edit that value in a second column called NewValue.

In other terms, One colum OldValue will keep the existing values from the DB before being edited by the user, this column OldValue is readonly. Another column NewValue will display, the 1st time, the old value from the DB (similar to OldValue when we do the Fetch from the DB), but it`s editable column, so the user can modify each value in the column NewValue without overriding OldValue cells. For now, I bound both columns OldValue and NewValue to the same property VALUE of the Rate object,

[Code]...

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Change Programmatically Cell Values Of Bound DataGridView Without Receiving Exceptions?

May 4, 2011

I have problems trying to change programmatically the content of a cell of a bound DataGridView.I implemented a minimal piece of code to show the problem.Do the following steps to replicate the problem:

Launch example
Write the title content to create a new row
CTRL+C on inserted title

[code].....

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Adding Values Of A Column In A Data-bound Datagridview And Placing Results In A Textbox?

Jul 28, 2011

I have a datagridview that is populated from an Oracle 11g DB. What I would like to do is add the values of a column together and display the results in a textbox. What would be the easiest way to do this?

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Code For Displaying A String Array Of (9x13) Values In A Datagridview Control?

Nov 22, 2011

provide a simple example code for displaying a string array of (9x13) values in a datagridview control. I am lost in the complexity of data binding and datagridview controls. I am an experienced VB6 programmer and cannot seem to grasp the transition from flexgrid control to datagridview control.

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Using A Datagridview To Update A Database And The Datagridview Is Bound To A Bindingsource

Dec 12, 2010

If using a datagridview to update a database and the datagridview is bound to a bindingsource which has its datasource as the table to be updated: where dshould you place the tableadapter.update(mydatarow)

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Updating Bindingsource Bound To A Datagridview

Jun 10, 2010

How do I update a field in the underlying bindingsource for rows selected in a datagridview.

I can do it for single row in the bindingsource but not for several selected rows in the datagridview.

bindingsource.table.current is usually the current row in the datagridview

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DB/Reporting :: Displaying DataGridView Text Column In A Mixed Bound/Unbound DataGridView?

Mar 15, 2011

I have a DataGridView (dgv) on a Windows form (VB.NET) which is bound to a datatable. One of the bound columns is a an ID (Foreign Key) to another datatable. All I want to do is Hide the ID column and populate an unbound column with the Name (ParmName) for the user. I searched the foreign value in the datatable and retrieved the information. I set the Value of the cell in the Datarow. All works well, but does not display. The cell accepts the value...I can even Debug.Print the values to the console. They are there just nothing displaying in DataGridView. Nothing odd about DataGridView. Should be straight forward...

My Code
,
Dim dtParm As DataTable = MyDataSet.tblParameter
Dim dgv As DataGridView = Me.dgvResultNum_DataGrid

[code]....

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Filter BindingSource By Greater And Less Than Values

Apr 11, 2012

I thought I had this sussed until I then wanted to filter between two values or greater than or less than two values. I have searched and searched all over the web for this and I just go round in circles. This is so frustrating why is this so difficult to find something so basic (anyway that is my rant). I have something like this but am totally confused and do not understand what I am doing now: how I get this working in plain English.

Me.BindingSource.Filter = String.Format("DeliveryDate >= #{0:MMM/dd/yyyy}# And DeliveryDate <= #{1:MMM/dd/yyyy}#", dtpStartDelDate.Value.Date, dtpEndDelDate.Value.Date) _
& String.Format("JobID >= {0} AND JobID <= {1}", txtStartJobID.Text, txtEndJobID.Text)

If I run this with just the date range filter it works fine it is when I add the second filter for the Job ID range I get the following error; {"Syntax error: Missing operand after 'JobID' operator."}

So I it is this line I have the problem with:

String.Format("JobID >= {0} AND JobID <= {1}", txtStartJobID.Text, txtEndJobID.Text)

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Accessing Individual Values Of A Filtered BindingSource?

Mar 19, 2012

A brief about the foundation of the program: I have created a VB2010 Windows Form application that connects to a Microsoft Access database. A datagridview is used to show all the data of the database. Then, a filter is used to filter the dataview (the BindingSource actually) and show the filtered db's data.

Let's say this is how I filter my BindingSource:

MyBindingSource.Filter = " price > '110' "

This would cause the dataGridView to filter the data (correctly), and let's say 10 rows are now displayed. What I am trying to do now is to get the sum of the values of one column of these new data. For example each of the 10 rows have a 'price' column which contains a double value. I would need the sum of these *filtered* values.

I found on the Internet that I may be able to transform the BindingSource into a DataTable and I could, but now I don't know how to access the values inside this!

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Bindingsource.filter - Show Only Those Records That Have Null Values

Nov 7, 2009

I'm trying to filter all the records in my datatable that have a NULL value for one the fields in the table, I'd like the bindingsource to show only those records that have null values.

[Code]...

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Sort A Bindingsource Basing On A Column That Has Alphanumeric Values ?

Jan 2, 2012

how to sort a bindingsource basing on a column that has alphanumeric values

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Bound Datatable To Values Of A Datetimepicker?

Mar 4, 2010

this is my datatable i want each value of a datetimepicker to view the data

dim booking_table as new datatable
booking_table.Columns.Add(
"Time", GetType(String))

[Code]....

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Combobox Taking Values From Another Table Than That To Which It Is Bound?

Mar 18, 2010

I have looked all over the web for a way to set up a VB 2008 combobox but what I have seen makes me shudder! I want to , as In Access VBA, set the recordsource/datasource for the combobox i.e. the list shown in the combobox, to the values of another table (currency) and then when the user selects one of these values to store it in the (already) bound field of the combobox (to another table). In Access of course there was a wizard for this sort of thing, but in VB 2008 looks like it is just lots of code.

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Extracting Values From A Data Bound Combo Box?

Jun 18, 2009

I have a combo box which is databound at run time & I need to iterate through it to get all the values in it (not display items) & then add these to an array or collection.

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VS 2008 Getting The Selected Values Of A Listbox That Is Data-bound?

Sep 25, 2009

Im having a problem getting the selected values of a listbox that is data-bound..

vb.net
Do Until CType(Ctrl, ListBox).SelectedIndices.Count = 0
For Each Index In CType(Ctrl, ListBox).SelectedIndices

[code]....

The error message says... "Operator '&' is not defined for type 'DataRowView' and string " "." And the only way I can get it to work is to pull out the & operator and change that line of code to this.

vb.net
'FROM THIS:
TableData.Miscellaneous += CType(Ctrl, ListBox).SelectedValue & " " 'Errors HERE

[code]....

The SelectedItem text shows up in the controls current state while debugging, correctly.. but after I finish the execution it shows up as "System.Data.DataRowView"?

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VS 2010 Retrieving Values From Data-bound Checkedlistbox

Feb 21, 2012

[EDIT: I've found the problem.] So if I have a checkedlistbox and put some random values in it, I can just retrieve the values like so:

[Code]...

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Jun 18, 2012

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VS 2008 Binding Source And Changing Row Values From Code Vs Bound Controls

Sep 6, 2009

[edit]oops - stupid typo - this is resolved and explained in the next post[/edit] I've got a BINDING SOURCE - that I bind to controls - textboxes mostly. I create a row in the datatable behind this BINDING SOURCE like this.

[Code]...

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Dec 24, 2011

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3 ||||||||| - 9
5 ||| - 3
6 ||||||- 6
10 ||||||||| - 9
2 | - 1

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I am using Microsoft Report Viewer in VB 2008.

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the combox is bound database table,but it is not displaying the contents of table in database,instead it is displaying corresponding null values(blank).it is showing just "select" and the blank spaces corresponding to the number of items in database

here is my

Function combobfill() As DataSet
addconnection.Open()
Dim selectstring As String = "select materialsname from materialtype_table"

[Code]....

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Displaying Values From A Single Combobox?

Jun 6, 2011

the code display 2 colunms in one combo box from a table. i have table with 2 columns account_type and account_name. the account_type is an abbreviation(codes) which would be stored in a new table when selected. I want the code when the combo is click, would display the code-account_type and account_name in the same combo box.

Private Sub cboAccount_type_SelectedIndexChanged(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles cboAccount_type.SelectedIndexChanged
Dim cn As New SqlConnection(ConnectionString)
Dim query As String = "Select Concat(Account_type, ' - ', Account_Name) As AccountDesc, Account_type from Accounts"

[code]....

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Displaying NULL DateTimePicker Values?

Jan 4, 2010

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DateOPStartedRevisionDateTimePicker.Text = ds.Tables(0).Rows(0).Item(13).ToString

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Displaying Values From A Website Input Box?

Dec 5, 2010

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Calculate A Column Values Based On Other Column Values In Datagridview?

Jun 3, 2011

am trying to calculate the values in rows in column 6 based on values of column 5. Bellow is the the code I am using I get a run time error about the string not formatted properly

[Code]...

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Compare Values In Datagridview With Values In Database Before Inserting Into Database

Dec 15, 2010

I am building VB.NET application that takes data from text files that are exported from a legacy DOS program. These are written to a datatable and displayed in a datagridview. Right now my code simply loops through the datagridview and inserts the data into the database (SQL Server). There is a requirement now that the client number must be checked before the insert to see if it exists in the database. If it does, then the value of one field (tax rate) is checked against the value of the field in the datagridview. If there is a difference, then the rate is to be updated in the database and the data that was in the database is to be written to a history table for audit purposes. If the client number is not there, then we are to do the insert (which is already written). I want to know what is the most elegant and efficient solution for this problem.

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Displaying Hex Byte Array Values In A Specified Format?

Sep 17, 2010

I need to convert hex values aa 01 00 17 f4 2f (as contained in byte array FrameData) to display in a label control as AA:01:00:17:F4:2F

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similarly I need to convert hex data ('02 00' contained in byte array FrameData) as
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FormView - Assigned Values On Load Not Displaying

Jun 7, 2011

Normally I've been lucky to find someone who has had the same problem and applied their solution but after hours of searching I'm not able to find a solution to this one. I've got a FormView which is default mode set to Insert. When the page is loading I'm checking to see if the session variable which the formview datasource is set to has a value. If it doesn't I've coded in the onLoad that some of the controls in the InsertTemplate would be set to specified value.

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