Datagridview Index Error While Cycling Through Cells?
Mar 15, 2012
cycle through the cell values of particular column in a datagridview. and if duplicates are found, display them in a message box.
Dim wacko As String
wacko = DataGridView1.Rows(0).Cells(1).Value
For m As Integer = 0 To DataGridView1.Rows.Count
[code]....
Now this is a very basic concept, but the problem is when the last row value is returned, i get an indexing error "Index was out of range. Must be non-negative and less than the size of the collection. Parameter name: index" i tried to count-1, but that doesnt cover everything. And even easier, would be to set no duplicate allowed in the datatable itself. but i want to fill those particualr rows with color.
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Jul 24, 2007
I have a DataGridView, everything work fine except that when I delete a row from my binding DataTable I'm getting this error in my DataGridView:The following exception occurred in the DataGridView:System.IndexOutOfRangeException: Index o does not have a value.at System.Windows.Forms.CurrencyManager.get_Item(Int32 index)at System.Windows.Forms.DataGridViewDataConnection.GetError(Int32 rowIndex)To replace this default dialog please handle the DataError event.Why?
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Sep 15, 2009
i have to modify an asp.net application. The app consists of an huge gridview with lots of javascript, controls and cell modification (color cell etc.) in it. Now i have to modify the gridview to add some more colums. Lot of code is based on identifying a cell based on its index e.g. row.Cells(1). Is there way to optimize this behaivor? I dont like the thought to add a colum in the middel and then increment all indeces to match the new positions.
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Sep 25, 2010
I get an error on the last line of sub where I am trying to assign a combobox to a column which is a textbox.error:Index was out of range. Must be non-negative and less than the size of the collection. Parameter name: index[code]....
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Apr 19, 2011
I want to perform some simple auto-formatting to the cells in my GridView. So far, I have the following code:
Private Sub gridviewRefreshPanel_RowDataBound( _
ByVal sender As Object, _
ByVal e As System.Web.UI.WebControls.GridViewRowEventArgs) _
Handles gridviewRefreshPanel.RowDataBound
[Code]...
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Dec 9, 2009
I am using Sub to format datagridview but during Form_Load this error occur. There are rows in datasource and dg.row.count is > 0.
.Columns(0).Width = 50 <==== ERROR HERE
.Columns(1).Width = 150
.Columns(2).Width = 80
.Columns(0).HeaderText = "ID"
[code].....
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Oct 23, 2009
Getting error filling grid view from reading through data table:
Dim myDataTable As DataTable = myDataSet.Tables("SunTrust")
Dim myRow As DataRow
Dim i As Integer = 1
Try
[code]....
Error:Index was out of range. Must be non-negative and less than the size of the collection.Parameter name: index
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Jan 22, 2009
What im trying to do is send vars to a flash file.The following is my code:
Protected Sub Page_Load(ByVal sender As Object, ByVal e As System.EventArgs) Handles Me.Load
Dim oTitle As New ArrayList
Dim oSub As New ArrayList
Dim oRate As New ArrayList
[code]....
What I'm expecting the output to display is something like "t1=value&s1=value&r1=rate&t2=value&s2=value&r2=rat&t3=value&s3=value&r3=rat" But... i keep getting this exception: index was out of range. must be non negative and less than the size of the collection. Parameter name: INDEX.
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Aug 25, 2011
I have a datagridview, with 3 columns, each containing dropdown filters (in the column header). Of the 3 columns, 2 are working perfectly fine, but whenever I try to filter the 3rd column, it gives me this error: (Also all of the column's have the ColumnType property set to: DataGridViewAutoFilterTextBoxColumn) "Index was out of range. Must be non-negative and less than size of the collection. Parameter name: index." The error points to the part that begins with "If dgv1.Rows(e.RowIndex)..."
Private Sub dgvWPS_CellFormatting(ByVal sender As Object, ByVal e As System.Windows.Forms.DataGridViewCellFormattingEventArgs) Handles dgv1.CellFormatting
If e.ColumnIndex = 1 Then
[code]....
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Mar 5, 2009
I've got the web browser with tabs in all working fine, but there's one bug, i can add tabs, delete em, etc.. but when i delete a tab then go to create a new tab, it gives me the error: InvalidArgument=Value of '6' is not valid for 'index'. Parameter name: index '6' is the number of tabs i had open.Here's the bit of code i use to create the tabs with the browser in it:
vbcode
Dim browse As New WebBrowser
browse.Name = "b1"
browse.Dock = DockStyle.Fill
[code]....
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Feb 12, 2012
I am developing a windows application. i have a datagridview whose datasource is a binding source. Also I have this filter applied to the binding source
Dim txt As String = txt_itemcd.Text
If String.IsNullOrEmpty(txt) Then
bs.RemoveFilter()[code]....
i want when user clicks on any cell of the datagridview, the data in that row should be filled in the respective text boxes. how is that???Actually I had this code
Private Sub dg_item_CellClick(ByVal sender As Object, ByVal e As System.Windows.Forms.DataGridViewCellEventArgs) Handles dg_item.CellClick
con.Close()[code]....
but since when i hv applied binding source, the error comes up "Index out of range"
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Jul 22, 2009
Using: Programming Software: Visual Basic 2008 Express Database Software: Sql Server Express 2008 Here's the quicky on the problem I'm having: I've got a datagridview bound to a dataset and on first load everything runs fine. However, when I remove a record from a table and try to reload the datagridview, I come accoss an error saying the index is out of range. Here's the code:
[Code]...
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Apr 14, 2009
I am working in VB 2008 and I have set up a datagridview to display rows of data which can then be selected. When I select the first row I get the error: Index was out of range. Must be non-negative and less than the size of the collection. When I select any other row the program executes as it should. From what I have learned so far is that the DataGridView has an index of -1 and that it counts the header row as part of the index which is the -1.When I select the first row through either DataGridView1_RowHeaderMouseClick or DataGridView1_CellContentClick the index is 0 for the first record. If the index is 0 I think it would fire off, but I have no idea what is happening behind the scenes. I can check the index, so when it is 0 and the code attempts to access the row, that is when I get the message.On an index number of 1 and up the code executes fine.So, is there a way to re-index the DataGridView, or is there a work around/fix for this issue?
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Nov 13, 2008
i would like to know the syntax for this.i wanna add the values of 2 cells and then i will display their total in textbox.i have been trying to use datagridview.rows.cells but i cant just use it to add to cells values.
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Jun 12, 2012
i wanna compare my cells in datagridview. I have a datagridview with n columns and n rows. I have my datagridview row value as Time . I need to compare all the row cell values with one particular time.
Here you go with an example.
if my dgv is filled with time values such as 3:42:10 AM 4:43:17 PM etc..I need to compare all the cell values to 5:00:00 PM. greater than condition. I need to highlight only the values which are greater than 5:00:00 PM but less than 3:30:00 AM.
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Apr 29, 2010
I'm current in college and working on some computing coursework and putting the finishing touches on it when i stumbled across a bit of a problem.I'm trying to compare two cells in a database and i use datagridview to display the database in my form. The database is created by sql commands within my actual program if that makes any difference. What i have created for my coursework is a program that manages the stock and such for a small music shop and in the stock table im trying to compare values in two different collumns, but in the same rows. I need it to display a message box in the event that the value in the one cell is less than the other, which is basically checking if the stock for a certain CD has fallen below the reorder level.
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Jan 30, 2012
I have 3 column Qty,Price and Amount and i need to compute the amount per line using DataGridView, what are the possible events I may use?
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May 29, 2010
I am usinb VB 2010 How can I count the number of cells in a row.
My datagridview currently holds 10 numbers in each of 3 rows
The number of cells grows and I would like to be able to count how many cells are filled
All cells must contain a number
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Jan 11, 2010
I'm trying to fill a DGV from a (List Of).. This is my code. It's not working & I don't know why..
Public AllBooks As New List(Of Book)
Public dgvInventory As New DataGridView
Private Sub BookDetails_Load(ByVal sender As System.Object, ByVal e As System.EventArgs)
[code].......
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Jan 6, 2011
I have a datagridview and I want to click on it BAD to jump to 4 cell, but to walkwith the arrows is normal, I did this because the KeyDown / UP does not work becausethe cells are in Edit Mode:
Private Sub DataGridView1_EditingControlShowing (ByVal sender As Object, ByVal e As System.Windows.Forms.DataGridViewEditingControlShowingEventArgs) HandlesdgvContactos.EditingControlShowing
Dim EditingTxtBox The TextBox = CType (e.Control, TextBox)
[code]....
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Oct 20, 2009
I'm completely newbie and I have been trying to solve a problem that is strongly related to what you guys had discussed here .
I have a datagridview (datagridview1) on my form and it is not linked to any database. I'm only trying to programatically enter values into the rows of the grid by values that my program generates.
For example if the value that my program generates is x, y, z then I would like to say something like[code]...
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Jul 24, 2009
Get coordinate of any cells in datagridview?
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Sep 13, 2008
Is the following grid layout possible with DataGridView in VB.net? Kind of similar to html table layout. I'm adding data cell by cell. However I'm not sure on how to get the layout for Group A & Group B Cells.
-------------------------------------------------|
| Item11 | Item12 | Item13 |
|-----------------------------------------|
| Item21 | Item22 | Item23 |
GroupA |-----------------------------------------|
| Item31 | Item32 | Item33 |
|-----------------------------------------|
| Item41 | Item42 | Item43 |
-------------------------------------------------|
| Item51 | Item52 | Item53 |
|-----------------------------------------|
GroupB | Item61 | Item62 | Item63 |
|-----------------------------------------|
|Item71 | Item72 | Item73 |
-------------------------------------------------|
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Dec 2, 2010
when looping through the cells of each row in a datagrid... I am trying to get the cell type...
wheather it is a checkbox or not... and if the checkbox is null... then set it to false...
in my datatable, i've defaulted the value to false, but seems to have not effect
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Feb 11, 2010
I want how to merge cells in DataGridView?
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Dec 18, 2010
Is there any way to retrieve data from certain cells of a Datagridview?
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Mar 4, 2009
I want to select all cells from datagrid for doing futhur operation. I had use following code but it read only one selected data from datagrid .
DataGridView1.SelectedCells.Item(0).Value
read all data from datagrid cells
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Sep 14, 2011
I need to represent different 4 (max, maybe 2 or 3) colors to the user in datagridview control @ VB.NET. An example cell would be:
---------------
| Blue | Red |
--------------- <<<- A Cell
| Gray | Blue |
---------------
i need to split a cell to different size or counts. I know merging cells is possible, is opposite-merge possible?
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Jan 17, 2009
How do I add the cell on my datagridview? I am not sure how to do that but I have four columns which I want to add the cell on 3rd column on my datagridview.
DataGridView1.CurrentCell.Value("test").ToString()
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Oct 16, 2011
Im just going to have to get used to this language for the rest of the semester And smohd, I will get back to you with my problem. That "Me..." control is so random. Not like JAVA Why am I getting an error with totalGrade
[Code]...
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