I had the following code :
Dim row As Integer = 0 For row = 0 To pdgvDataGridView.RowCount - 1 pdgvDataGridView.Rows(row).Cells(0).Value = row + 1Next
it's to add auto number into first column of each row. The codes running well, but after the codes completed, the first column of each row remain empty.
I have 4 Columns in a ListView. The first one is called Serial No. Every time I populate it, the serial number increases automatically. After populating the ListView couple of times, I select any row(s) and remove it. When I remove one or more row(s) from the listview, serial numbers stays same. I want the serial numbers to be fixed automatically when I remove any number of row(s). How can I do that ??? Here is my code -
Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
Dim Str(4) As String
Dim newItm As ListViewItem[code]....
I had the following code :
Dim row As Integer = 0
For row = 0 To pdgvDataGridView.RowCount - 1
pdgvDataGridView.Rows(row).Cells(0).Value = row + 1
Next
it's to add auto number into first column of each row. The codes running well, but after the codes completed, the first column of each row remain empty.
I have a datagrid control in my winform application. It has nearly 30 columns. First 2 column are frozen and others can be views using scrollbars.
Its working fine.
I would like to add some functionality on it by allowing user to select a column from column list above and making the datagrid scroll to that column automatically.
So i would like to ask how could i make my datagrid to scroll to specified column automatically.
VB2005 - DataGridViewMaybe not a quirk, maybe more of my misunderstanding of how resizing works. But here is what i want to do. I want to display a dataset to the user in a ataGridView. By default the columns should be autosized to all cells including the headerThat's the default view but the user should be able
View 8 RepliesI've got a DataGridView that has a DataTable as it's Datasource. Whenever I sort a column and then edit a cell, after editing the column, the column autosorts so the recently edited cell is no longer in the viewable area. Is there any way to prevent this auto sort from happening and only sort when I click on the columns?
View 2 RepliesOS: windows 7 64-bit /Programming Language: Visual Basic.net on Visual Studio 2010 express edition.I have dataset with 4 tables each one of them is a datasource to a datagridview I want to add a serial number column to the datagridview so I made this
DataGridView1.Columns.Add("serial", "SER.")
For x As Integer = 0 To (ds.Tables("workers").Rows.Count - 1)
DataGridView1("serial", x).Value = (x + 1)
Next
It was working fine untill I added a relationship to the dataset the relationships codes were
Dim relation_WC As New DataRelation("relation_WC", ds.Tables("workers").Columns("id"), ds.Tables("cources_jun").Columns("workerid"))
Dim relation_WV As New DataRelation("relation_WV", ds.Tables("workers").Columns("id"), ds.Tables("vacations_jun").Columns("workerid"))
[code]....
I breaked point the debuging and I found that the serial number column I added is fine and has it's values, but when I reach the line relations.add(the_relation) the serial number column loses it's values and turn into an empty column with no
numbers in it....why this is happening?
Note: I added another relations but the only relations that clear the serial number column are the relations that has a datatable that is a datasource to the datagridview that has the serial number column.
I'm using VB.NET 2008. I have an Bound DataGridView with a numeric column that can be edited. However when one selects the number and backspaces there is an error. If I trap it in DataError Event the error message is "Input String was not in a correct format". How can I prevent this error?
View 2 RepliesI have a field defined as string for phone number which in my SQL cast to Integer.
Format the column as follows
DataGridView1.Columns("ContactPhone").DefaultCellStyle.Format = "(###) ###-####"
This works as expected for cells with a phone number but for cells without a phone number I get
{}- Which seems like the proper output for what I specified.
is it possible to format cells with no data (no phone number) to show up empty in their cell?
I am trying to sort a column in DGV as follows:
DataGridView8.Sort(DataGridView8.Columns(0), ListSortDirection.Ascending)
However, I want to use the name of the column and extract the index number in the first parameter of the Sort method. However this fails:
DataGridView8.Sort(DataGridView8.Columns("Date").Index, ListSortDirection.Ascending)
Is there a way to allow the user to only type in a certain number of characters in a datagridview column? Like a invoice number can only be 1-6 digits long and I want to stop them from typing more than 6 digits.
View 7 RepliesHow to add a checkbox column at first column of datagridview including column header?After adding, how to code to "check all" or "uncheck all"?
View 27 RepliesI wrote a function to format numbers like this: 123456100,12 -> 123.456.100,12 (I have a function too, which converts numbers from this strings).Now, I have a dgv and a column with these numbers (or rather strings). The sort mode is set to automatic. If I sort the column, it doesn't work, because the values are not really numbers, but strings. But I get the same result (the sorting doesn't work), if I use the formatnumber function (this returns strings too).
I could use the programmatic sort mode and before sorting I format the strings to numbers, then sort the column, and then format the numbers like above. But this is a bit slow (the dgv has appr. 800 rows), and in this case, I haven't an arrow next to the column header text.is it possible to sort the column like a normal number-column with automatic sortmode?
Is it possible to do the following rounding scheme?
36 = 40
37 = 40
38 = 40
[Code]...
I guess what I'm asking is if there's a way to find the value of the number in the ones column and tens column.
I'm doing a notepad project, just because, and in Ms's notepad there is an option for a statusstrip. I'm just having probems getting the line number and I know it's not called column number, more like selection start. When I do the selection start, it works, just not how I want it to like so:
[CODE...]
but when I use that, it acts funny. I have it in my textbox's.keydown event. So if I were to use the arrow keys to navigate around text then it gets thrown off very easily. How would I do this?
Add persistence to multible DataGridView in terms of Hide/Show column and column width
View 1 RepliesI have constructed my database and I have used auto increment the ID's of each column. When I was testing and inserting data into my tables the auto increment of these column's of course incremented.
Now I am looking to start each individual Id column at 1 and not at the number where it is now.
I know it has something to do with using max value and +1. I have deleted the entire table and have tried everything to re-insert my data and start the ID's at 1, but I have had no luck.
Also to,
I know within Vb I can use a datagrid view and add there and it starts at the max value of the column +1, but when I have another form to add data within columns the column number is not in numerical order, How do include code within that seperate form to auto increment ID column numerically?
It seems that on clicking datagridview column header, the column will be automatically sorted based on the column type. I have a column showing some numbers. If column type is string, it sorts "1","20","3" into "1","20","3". If column type is double, it sorts into "1","3","20" which is the result that I want. However, there might be some erros in the numbers and error messages(text) will show in the cell instead of numbers. So I cannot set the column type as double. I want to ignore these error messages and sort all the numbers. How can I do this?
Also, I need to add some background colors to different rows in datagridview. So in the column header click event, I call the bkgColor Sub to achieve this. My question is that how can I override the sorting method in this event?
Private Sub DataGridView1_ColumnHeaderMouseClick(sender As Object, e As System.Windows.Forms.DataGridViewCellMouseEventArgs) Handles DataGridView1.ColumnHeaderMouseClick
Try
[code]....
i have a datagridview with three columns. i set the first column to visible=false, so the user can only see two columns.when the user presses the tab key in the first visible column -- column(1), i want to ignore column(2) so that the user only tabs through the rows in column(1)i can't get it to work. it will always tabs through the rows in column(2) even if i use the column name.
[code]...
I want to disable column in datagridview so the column will not receive focus,
when user press tab to move from cell to cell this column will be skipped and the focus move to the next cell or column.
i'm importing a text file into a access table like this:
vb.net
sql.CommandText = "SELECT * INTO [tblMailList] FROM [Text;DATABASE=" & frmMain.FolderName & ";HDR=NO].[" & frmMain.TextBoxFileName.Text & "]"
sql.ExecuteNonQuery()
my question is what is the best way to add an autonumber to the table? i currently do it like this:
vb.net
sql.CommandText = "ALTER TABLE [tblMailList] ADD COLUMN [ID] AUTOINCREMENT;"
sql.ExecuteNonQuery()
but when the file is too large i get this error: "File sharing lock count exceeded. Increase MaxLocksPerFile registry entry."
and yes, i have tried to change the registry entry and it didn't work:
vb.net
My.Computer.Registry.SetValue("HKEY_LOCAL_MACHINESOFTWAREMicrosoftJet4.0EnginesJet 4.0", "MaxLocksPerFile", "9000000")
How can i auto generate number in vb.net
View 4 RepliesI have a datagrid and I have imported it to my project under vb.net language, and the database is MS access any way in this datagrid one table call "Employees" ID - Name - Nationality - Job title and what I want is when I write the ID number of the Employee, all the other details automatically comes upon to his ID number.
View 1 RepliesIn my window application i have taken one combobox field with its collection as "amc", "war" etc. Now in my datagridview this combobox column is display as Textbox column, i want to change it to combobox with the above collection "amc","war". I have retreiving the result in datagrid through sql query, hence in datagrid edit column section we doesnot have that part to change to Combobox column.
View 1 Repliesin my window application i have taken one combobox column with its collection as "amc", "war" etc.Now in my datagridview this combobox column is display as Textbox column, i want to change it to combobox with the above collection "amc","war".
I have retreiving the result in datagrid through sql query, hence in datagrid edit column section we doesnot have that part to change to Combobox column.
I have:
- Table1 with columns: PK_ID1, LOCATION, DIRECTOR, SELLER, SELLERID, WORKTIME (relationship), WORKCODE
- Table2 with columns: PK_ID2, WORKCODE (relationship) & WORK_DESCRIPTION
My DataGridView do a SELECT * FROM Table1;How can I replace WORKCODE with WORK_DESCRIPTION in DataGridView, please?
Dim Comp = From C In db.Table1 _
Select C.Completed, C.Taken, C.Namne
Datagridview1.DataSource = Comp
Am using the Entity Framework and Columns Completed and Taken are of bit Datatype. When the query results are displayed in the datagridview, these bit columns are returned as of ColumnType Textbox - so i get a Datagridview textbox column with true or false string values.
I want to display Completed and Taken as Checkbox columns (either ticked for True or un-ticked for false) but ofcourse i can't do this in EditColumn dialogue because the Datagridview is unbound.
how can i change this in code at runtime
Probably a simple question for most of you. I'm putting members of a group into a SQL Database so we can better manage attendance and 'points' that they earn for doing work. I've written the program in VB and have the SQL server running fine. However, I have created a separate table to handle the points and have marked the relationship between the table - the column is named 'PointID', and should be unique for each person. When I add a new user to the database, I want it to automatically assign a value to that without me having to do anything extra beyond pressing save. From this PointID, it should identify the user and it will bring up the person's points.
View 12 RepliesHow to display the auto generate next number from sql server 2005 to vb.net 2005 textbox. This code below is not displaying any data in the textbox after retrieving the data from the database.
Code:
Imports System.Data.SqlClient
Public Class NewConnection
[code].....
I want to create auto increment number in vb.net like : -
01, 02, 03, 04 etc.. so it is in order.
I am using VB NET 2008 EXPRESS connection OleDb to MS access
I want to do the auto increment for my textbox MemberID
I have tried multiple ways and had no luck such as : -
If txtMemberID.Text = "" Then
txtMemberID.Text = 1
Else
[Code]....
I want to write the code not use the autonumber in Access as my lecturer does not want me to do it this way