"DataGridView Control Must Be Bound To An IBindingList Object To Be Sorted" With Dataset
Aug 26, 2009
I'm calling a webservice using the async method, and catching the response with the completed event. When I first open the form, it all runs fine, however the second time I run the form I get the above error when attempting to sort the data.
Strangely, if I comment out the sorting code, it loads perfectly, and I can manually sort the dgv by clicking on the columns.
Code:Private WithEvents Tempws As ws.wsPrivate ID As Integer
Public Sub New(ByVal ID As Integer)
' This call is required by the Windows Form Designer. InitializeComponent()
[Code].....
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Dec 4, 2009
I have a few classes, one is a form, the other is the source of the datagridview. I want to be able to sort the columns of the datagridview by clicking on the header. Here are the classes that I am dealing with:
Imports DiscoveryByte.AddTools.Misc_Tools
Public Class ViewDiscoveryFlashCards
Private DBBindingSource As New BindingSource
[code].....
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Aug 31, 2010
I have a DataGridView that is bound to a DataSet and I allow someone to remove a row from the table and I remove the row from the set. My code looks like this:
ds.Tables(0).Rows(dgCourseList.SelectedRows(0).Index).Delete()
My problem I found is if the grid gets sorted the index of the rows no longer corresponds to the indexes in the DataSet. As a result the wrong rows get removed from the set.
Can I solve this problem with maybe having to sort the DataSet on some sort event of the DataGridView?
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Apr 9, 2012
Okay so I have a datagridview that is bound to a dataset. I have a column called type is a string char of either C, R, A, or V. The problem is that I want to sort the datagridview rows using that column and do so in the order I just gave so I want rows with C on top and then R and then A and then V. Because these aren't alphabetical, how could I sort the items this way? I did look into the icomparer, but really wasn't able to figure out how that works.
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Aug 6, 2010
How to bound this dataset to datagridview?
[Code]...
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Jun 11, 2010
I add a row to the DataSet using the following code:
Dim NewRow as DataRow
NewRow = gds.Tables("TitleDataSet").NewRow
NewRow("Title") = txtTitle.Text
NewRow("Local_number") = nubLocalnumber.Value
NewRow("Number_suffix") = txtNumberSuffix.Text
etc.
This code executes without errors but the bound DataGridView remains unchanged (without including the new row). Obviously I am doing something wrong or I am omitting a vital command. What do I need to do in order to make the new row appear in the DataGridView? I did not choose to bind the DataGridView directly to the database table because the database is selected by the user at execution time. Instead I bound the DataGridView to the DataSet. I included the command:L
dgvTitle.AllowUserToAddrows = True
but that did not have any effect.
Solved. Was missing the final command:L
gds.Tables("TitleDataSet").Rows.Add(NewRow)
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Sep 8, 2009
I have an app that downloads from a networked SQL database to a dataset and also to an XML file on laptops. Laptop users will take their executable and the XML file which the local dataset will read.Although I can get gridviews etc to bind to that dataset syntax such as
"TextBox1.DataBindings.Add("Text", ds, "fname")"
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Jun 5, 2011
I am creating one application visual basic and sqlce.I have two forms name Form1 and Form2.
I used Form1 to add data to database using OLeDb command and used Form2 to show data in datagridview by using dataset[code]....
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Oct 13, 2011
I'd like to have an updateable DataGridView that's bound to a database-driven business object. It needs to handle all aspects of CRUD and be sortable and filterable as well.
Most of them simply bind to an object (non-database, manually filled) and do not allow you to Add, Delete, and Edit records. Furthermore, they basically never show how you would perform sorting and filtering.
I think the biggest things I'm not understanding are:
1) How do you make the DataGridView perform additions, deletions, and edits on an object.
2) How do you program your object to handle additions, deletions, and edits. Do you just need methods that use ADO.Net, NHibernate, or Linq to SQL (or any other CRUD handling mechanism)?
3) How to make this filterable and sortable.
Is this overly difficult to do or why am I have so much trouble finding examples for this?
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May 19, 2009
I have a DataGridView object to which I've bound a list of objects (of type Asset) returned from a database query.I'm programming in VB using Visual Studio 2005.I want to grab two copies of the bound object (calling them oldAsset and newAsset) from the selected row in the DataGridView, update newAsset based on input from other controls on the form, and pass both oldAsset and newAsset to a function that will update the appropriate record in the DB.I try to grab the two copies like this:
Dim currentRow As DataGridViewRow = Me.AssetDataGridView.CurrentRow
Dim newAsset As Asset
newAsset = currentRow.DataBoundItem
[code]....
Opening a watch window on oldAsset and newAsset indicates that the appropriate values are pulled at this point. But when I try to change a property of just newAsset, like
newAsset.CurrentLocationID = cboLocations.SelectedValue
I see that the corresponding value in oldAsset is also changed. This is not what I want, but it's obviously what I'm telling the computer to do.
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Feb 10, 2012
with more control over changing values in a data bound DataGridView.On form load, all the data is pulled down from the attached database and fills the gridIf I want to change one of the values in the grid, I can put my mouse cursor in the cell, change the entry and save it back to the database.
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Sep 13, 2011
I have two datagridview's both are databound. First one shows items for sale and the second stores all the items that were sold. I am trying too transfer selected rows from one to the other but no matter what I keep getting told "Rows cannot be programmatically added to the DataGridView's rows collection when the control is data-bound."
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Jul 5, 2010
I've got a piece of code in a project (MyProject) that contains early bound object from a referenced assembly (We'll call it CommonAssembly):
Dim myObject As CommonAssembly.MyEarlyBoundType
now I have another assembly that is dynamically loaded because it is not present in all projects:
Dim myLateBoundObject As Object = AppDomain.CurrentDomain.CreateInstanceAndUnwrap("Utils", "Utils.MyLateBoundType")
MyLateBoundType derives from CommonAssembly.MyEarlyBoundType, and I want to cast myObject to myLateBoundObject and then programmatically invoke the additional
[Code].....
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Sep 1, 2010
I have DataGridView display Customers Details. The DataSource are from DataSet. After the user have created a new customer record and updated the SQL SERVER Table, Instread of refreshing the whole DataGridView I am trying to add new rows with data from the TEXTBOX into the DataGridView and it generated this error message: Rows cannot be programmatically added to DataGridView's row collection when the control is data-bound This is the coding which the error was generated from:
Private Sub FRefreshDataGridViewRow()
'use strmode to determine New or Edit existing record
Dim strCell1 As String = CType(Me.txtCustId.Text, String)
Dim strCell2 As String = CType(Me.txtCompName.Text, String)
[code].....
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Nov 16, 2011
Alright I have a DataGridView, where the user can click on the column headers to sort. When they add a new row while a sort is applied, the record isn't created until the moment they validate the row(which they cannot do till they exit the newRow). How can I make the row be selected once it is sorted?The DataGridView is databound.The selection mode for the grid is full row.I'm using VB.NET with SQLite database backend.I suspect I need to use the RowsAdded event, or DataBindingComplete events. The records in question do have a unique GUID attached but it is NOT visible in the DataGridView.
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Jun 4, 2010
I have a DataGridView that is bound to a DataSet I created from a database table named Contacts. The Contacts table contains a field called StatusId. StatusId is a foreign key to a table called Status. The Status table contains StatusId and StatusName.
[Code]...
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Mar 19, 2012
I am using a bindingsource to load data in datagridview. Some textboxes, comboboxes and a picture box are binded to the current item of the bindingsource. Note that the image is not being displayed in the datagridview. Only the picturebox in the form display the picture of current row in the datatable. The problem occurs when I follow the steps below:
[Code]....
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Feb 23, 2012
I have a DataGridView with 4 columns which I transfer toa dataset - this works fine, i posted the code belowHowever I adde a CalendarColumn into my DataGridView but this doesnt transfer over to my dataset.Does anyone know how I can add this Calendar column onto my dataset along with the other 4 columns?
Dim col As New CalendarColumn()
Me.dataGridView1.Columns.Add(col)
Me.dataGridView1.Name = "Trip Date"
[code].....
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Jan 11, 2012
I have a datagrid which is already bound to a dataset, I need to get this dataset,make changes on some data, then rebind the datagrid with the modified dataset.
here's my code
[Code]...
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Jun 5, 2009
I have a datagridview named "DG" bound to a datatable. The grid has one column that requires me to determine its value, so the grid has the virtual mode property set to true.When i try to add using the dg.rows.add, i get a message saying 'operation not valid while in virtual mode'.If i set the virtual mode to false and execute the dg.rows.add line i get."Rows cannot be programatically added to the datagrid's rows collection when the control is databound"Ok....i cannot use rows.add when in virtual mode,.....and i cannot use rows.add when i am in data-bound mode.So then next thing i try is ctype(dg.datasource,datatable).rows.add , This gets the row into both the underlying table as well as the into a new row located at the bottom of the grid.
I try this: dg.sort(dg.columns("Row"),ascending) and get this "Operation is not supported when VirtualMode is set to true." i try seting virtual mode to false and get this: "Data-bound DataGridView control can only be sorted on data-bound columns."The column "Row" IS a column in the underlying table.If i click on the column header it sorts correctly.All i want to do is add arow and have it be located in the correct place in the sort order.
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Jan 13, 2012
What i am trying to do is get the data type of the sorted column that the user selects in order to properly convert a variable. the variable will be used to locate similar values in the dataset that populates the datagrid view.
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Dec 20, 2010
I have a datagrid that I use to display data from a SQL 2000 table. I am trying to write back any changes the user makes to the datagrid data back to the original table but don't know the proper method to do this.
[Code]...
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Jan 13, 2010
What I am trying to do is sort a datagridview and remove a row from its sorted position to the 1st row.
The problem I am experiencing is as follows:
in the source below, when the code runs "MeanRow" is populated with what is required. As soon as Rows.Remove() executes, the MeanRow datarow is lost. Why would this be if I'm declaring a new variable and simply setting it?
Code:
MeanRow = r
TabGrid(dgv.Name).Datatable.Rows.Remove(r)
Code:
Private Sub dgv_Sorted(ByVal sender As Object, ByVal e As EventArgs)
Dim MeanRow As DataRow
[Code].....
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Jan 7, 2010
I need a control that adds strings, and tags. And I want to sort the strings ascending.
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Mar 27, 2011
I have a DataTable in a DataGridView, one of the columns has data that I want sorted. I can click on the column header to sort it and it's fine. The problem is that I don't want that column sorted automatically when some of the data changes in it. I want it sorted only when I click on the header.
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Nov 27, 2011
i have 3 textbox and 1 listbox bound to the same datatable. when i insert new row to the datatable, there are 2 rows affacted in datatable, one row in datatable is replaced by the newly added row, and this new row is also insert into the end of datatable, while this modified datatable is updated into the database, only the inserted row is updated, the other modified row did not affacted in database.
here is my code:
Private Sub Form1_Load(ByVal
sender As Object, ByVal e As System.EventArgs) Handles Me.Load
Dim DA As MySqlDataAdapter
[code]....
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Jan 28, 2009
I'm using vb.net in vstudio 2005. how do I get the value from a combobox when I have it bound to a dataset?
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Jan 7, 2012
I built my programs in VB 2010 using a temporary dataset on my computer.I am not ready to have them address the dataset on the server, but when I call up the dataset to change the path, the full path is light gray and I can not change it.If I delete the dataset, it will ruin all of the forms that automatically populate from the dataset. Is there an easy way to change the full path of a dataset?
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Feb 15, 2012
I am binding a dataset (dsTest) with a table called "TempResult" to a datagrid (DatagridView1).The purpose of the datagrid is to display test labels (set elsewhere in the software) and to allow the user to enter results into an empty column titled results.To achieve this I've filled the dataset with the required test labels then added a column called "Result" with a default value of 0.00.The user can enter numbers into the "Result" column on the grid then click a button "ADD" to update the changes to the datatset,When I first open the form the datagrid shows the correct information and any changes made to the Result column are updated correctly - all is well.
Private Sub Add_Results()
Dim ResultColumn As DataColumn
Dim Rows As Integer
Dim i As Integer
[code]....
If I close the form and open it up again (i.e. the user wants to add more results) the datagrid shows the results entered the last time the form was use and any changes made to the grid are not updated and the form won't work again until the software is reloaded.
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Jun 15, 2010
I don't normally use strongly typed datasets, but I am maintaining an existing application that uses them.This application has a form to edit rows in detail view, so we have the navigator toolstrip with nav buttons on top, including one to add a new row.When this button is clicked, I need to update one of the bound text boxes with a value from the underlyingThe field in question is defined as nvarchar 25 It's almost always integers in this field, but one row has a string.In the dataset, I have a table adapter to go get the max value + 1 where the field is numeric, like this:
SELECT internal_num = CAST(MAX(internal_num) + 1 AS NVARCHAR(25))
FROM dbo.invoice_log
WHERE ISNUMERIC(internal_num) = 1
[code].....
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