My problem is once I filter my datagridview I cant seem to be able to update the database. The error I get is Concurrency violation: the Update Command affected 0 of the expected 1 records. Why is it that I cant update after i filter????
View 1 RepliesI want to make my checkboxes to work as a filter for my DataGridView. The checkbox.text is the thing I wanted to use for filtering.My problem is that, when I click on the button with one or more checkboxes checked, my datagridview shows no data. (Of course, before I pushed the button it did).
[Code]...
I have a DataGridView that is bound to a datatable. I also have a combo box with sorting items in it. When the user selects a new item in the combo box, the DataBindingSource.filter is changed accordingly.
For the cell and row validation on the DataGridView, I set the row error text accordingly as opposed to displaying a message box.
Occasionally, when switching between items in the combo box, the datagridview gets filled with a bunch of empty rows that all have error messages. It seems it is validating the rows that existed from the previously selected filter against the new filter.
See attached image. I hope I am making myself clear.
i'm getting confuse about dataset and dataview, which i either use dataset to update data or dataview to filter data, but cannot have both together at the same time. Private Sub searchStaff_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
[Code]....
i'm getting confuse about dataset and dataview, which i either use dataset to update data or dataview to filter data, but cannot have both together at the same time.
Private Sub searchStaff_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
ds = New DataSet[code]...
how to i can have both functions"update,filter" at the same time by using what method?
I'm having problems with bindingsource. I have a proc used to update a datagridview from a bindingsource. When I run the debugger, the datatable appears to be populated rowcount is 2206 and 7 columns. When the bindingsource.datasource is set, everything looks good. The filter appears to be ok, however, when the datagridview is set to the bindingsource, it's not working. I have it in a try/catch block and an error isn't being raised. When I reference the columns to size them, an error is raised. Below is the snippet of
[Code]...
I�m trying to make a simple database editor using DataGridView.I have one DataGridView containing a lot of data on products and some parameters on how they should be tested. Some of these parameters, for example "Test method", is just a number. But if I look in the table for Test Methods that number has lots of other parameters. So if I select a "Test Method" Cell and click a button that table opens in a new form with just that "Test Method" (if I for example have selected a cell with the number 1, Test Method 1 will be shown in the new form). So far everything I�ve said works. I can even change values and update it to database in the first "Products" table. So here is the problem The DataGridView that shows the products is bound to a table and always shows the same thing which makes it easy to change and update using the following code
Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
Me.INPUT_PRODUCTSTableAdapter.Update(Me.TestPlattformDataSet)
Me.TestPlattformDataSet.AcceptChanges() End Sub
This will change later when I add a search function. Then this will need the same modification aswell. The DataGridView thats shows the other parameters can�t be updated using just this code cause I get an error that says
"InvalidOperationException" "Update requires a valid UpdateCommand when passed DataRow collection with modified rows."
It seems like the problem is that because I change the data under run its not really bound to the database. And I haven�t found any complete solution to this. I have found some similiar problems and it seems I need to update each row using the command
TableAdapter.Update(DataRow)
Here follows the entire code for showing the Parameter Table in a DataGridView. This does not work.
Public Class Form3
'ID is the value from the cell selected in the Products table
Dim ID As Integer
[code]....
I want to filter a text in all columns in a datagridview. So I use Like % in the filter text. However, I found that the text(strFilter in my code) may contain % sometimes. So it have a syntax error. How can I use filter with like clause when the filter text contains %?
Private Sub PassFilter(ByRef dataTable As DataTable, ByVal strFilter As String)
Try
Dim dataview As DataView = dataTable.DefaultView
[Code].....
I am currently developing a program that was first built within access using VBA.My program is a search form connected to an access database, which is itself linked to a dbf database.I managed the code from access to a new program, but I am stuck with one line of code;How can I open a form (which shows the filtered data) using a filter (a string built with the input boxes).
The code in vba is:
DoCmd.OpenForm "frm", , , Left(strWhere, lngLen), acFormReadOnly
where FRM = the form showing the data
strwhere = SQL string
lnglen = number of characters in strwhere.
How can I do the same in a Visual Studio 8 environment (Visual Basic -idontknowwhat-) ?
How to Filter a Database Query Using a List..
View 2 RepliesI have a form that has a DataGridView named dgvResults on it. When the form is initialized I bind dgvResults to a DataTable named prpResultsTable using a BindingSource named bs. Code shown below:
Public Class frmImportData
Private cv_clsB As clsBatch
Public Sub New(ByRef clsB As clsBatch)[code]....
i need to know how to do add/delete(with conformation before deleting)/update/sorting/filtering/searching data just using bindingnavigator. by default when drag datagridview from datasource, it appaer ontop and having just add/delete/save item. but delete don't have confirmation. click on button add no code behind, delete no code behind.
View 2 RepliesI 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]....
I have a form with a datagridview bound to a database that has recorded who entered data into via the windows user id.I am trying to filter the datagridview to only display records created by the user that is currently logged in.I can get the windows user name with function getusername() which returns a string.
The field that houses the username is "staff_entering_referral"
I am doing this but the datagridview does not update or change.
bindingsource.filter = "staff_entering_referral = '" & getusername & "'"
[code].....
I am very new to VB.net express and I am getting confused as to what does what. I have to work with DBF files (clipper/ Dbase iii or iv) I have code to create a new DBF file with a reference to ADOX. The code example seems to work. I can open and display a dbf file (from a clipper application) using an oledb.connection This allows me to fill a dataset and bind to and display a grid view. I have yet to succeed in updating the source dbf file.
Does ADOX do anything for me beyond creating a new DBF file?The DBF file is unsorted and not otherwise indexed. For the data massaging and manipulation I may use a temporary sort but the data relations do not need that and the tables are not related.That being said, it appears that the data wizards or command builder will be of little use.
[Code]...
Today i have been checking out the concept of datasets and i like the way they work except for a minor issue i have with it.The following code should get a databasetable and put it in a dataset and return that set to the user.[code]I submit the table name and it will select it, read it and fill the dataset with it, then return it. And it does exactly that once.If i try to re-read the same datatable it just returns the exact same dataset as the first time yet i am 100000% sure that i changed it .
View 1 RepliesI have been on a database project for a while now. I wanted to be able to make changes to my database using the update command of a Datagridview control.However, I have been faced with a series of unsuccessful outcomes.I want to do this how do I go about it?
[Code]...
I have a DGV to filter and i need the outcome of this as a filter string which i can use to filter my BindingSource:
Try
Using connection As New SqlConnection("Data Source=.SQLEXPRESS;AttachDbFilename=D:ProjectMWMachineWaleMachineWaleDatabaseMW.mdf;Integrated Security=True;User Instance=True")
[Code]...
How could I have a datagridview on a form that could be tailored by the user having the options of lower/greater than, equals to/not equals to etc on each column?
View 5 Repliesis there a way to filter my DataGridView?
i have a datagridview with a column name 'Date' and i want to filter it using a datetimepicker.
example: when the value of datetimepicker = "specific date" then the data that will show only in my datagrid is = "specific date".
I'm adding textboxes inside a datagridview to use them to filter the data that is displayed in the grid. Each column has a textbox placed in the header. Everything is fine until the grid has the horizontalscroll visible. The texbox move if the scroll isused but they flicker and if the grid has the rowheader visible the textboxes gets over it. Is there any way to avoid the flicker and a workaround with the rowheader. I don't want to have to hide the rowheader but if there is nothing else that can be done.The class is not finish yet:
Imports System
Imports System.Collections.Generic
Imports System.ComponentModel
[code].....
I have it so when the form loads I can double click and the row and bring up the form to edit that row. This works. but if I run a filter on it and then double click it doesn't bring up the selected row but the first row of the grid as if I never had a filter on it. I have 1000 rows, I run the search to filter it and find 5 rows. I click on the last row and it brings up the data from row one of the 1000 rows. Always the top row. Does this have something to do with the bindingsource not having the correct index?
View 5 RepliesI am working on Visual Basic 2008 Express with Access 2007 database. I have 3 tables in my database wiz: Pastors, Districts and VillCODES. [code]...
View 7 RepliesI found a code voor color the data in datagridview when the date is older then 90 days.
How do i filter the other datagridview rows?
I only want to see de red rows
Try
For Each NRow In Me.DatumDataGridView.Rows
Dim date1, date2
[Code]....
filter using with combobox and display record from datagridview.I stored data in ms-access and display in gridview.i want display record which i select in combo box.
View 5 RepliesIm creating a filter/search for a datagridview in VB. I have a two comboboxes and one textbox. combobox1 selects a field, combobox 2 selects criteria, textbox is for values. After I select my field and criteria and enter in my value, I hit a Go button and run the following code:
Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
Me.TblSpeedStudyBindingSource.Filter = "select * from tblSpeedStudy where " & "'"
[Code].....
I get a syntax error: Missing operand after 'tblSpeedStudy' operator.
I am trying to search a value in 3 access tables. The one of them is the parent and the other to childs.When I search for the value in th parent table everything runs good. When I search for the value in the childs table it seems that I can not find the value, which in reality exists.My code , AturbCustomer (parent), Contact, SAPCustomer (Childs):
SearchString = "'%" & TextBox1.Text & "%'"
If ComboBox1.Text = "Customer" Then
[code]....
I want to add a filter to a datagrid view. What I want to do is add a row in the bottom of the headerwith textboxes in each columnof the grid for use them as filters.
View 3 RepliesI have a datagridview which filters on a boolean field where it's false. If the user clicks on the field, the line disappears immediately I guess because it no longer satisfies the filter. Is there any way to prevent this?
View 10 Repliesi'm using vb 2008 express editor, and 3.5 compact sql, through my program, i make changes, like altering rows, deleting or adding new rows, to a dataset. i want, that when button 1 is pressed, all changes made to that dataset, are updated to my database. what is the line of code that does this? [Code]
View 1 Replies