I'm facing the problem to remove a row after the user data-entry in the datagrivviewrow was recognized as invalid in an event. I'm using the cellvalidating-event and the canceledit-method of the grid to remove the edited row. Note: I do not want to give the user a second choice and thus do not use the e.cancel-method!
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Attempting to load datagridview and getting error Conversion from type DBNULL to type Date is not valid.SQL Field type is datetime but is sometimes NULL. When displaying records in grid, I need the NULLS to display as blanks and not 1/1/1900. I also need the dates to display in user's windows regional setting format.
View 2 RepliesMy console errors out when I enter anything other than a number or operators in the designated (input). I stink at this stuff but I have been t this for about 8 hrs. still not there. I have included a text file for the task at hand
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I'm using WMI code and VB 2008 to see NIC status. So far the queries are working, but the methods aren't. For example, I'm trying to set a network card to use DHCP, I get invalid function with this code:
Dim classInstance As New ManagementObject("rootCIMV2", "Win32_NetworkAdapterConfiguration.Index='7'", Nothing)
Dim outParams As ManagementBaseObject = classInstance.InvokeMethod("EnableDHCP", Nothing, Nothing)
I'm getting Invalid column name 'CHARLES'. Invalid column name 'CHARLYN'. Invalid column name 'SMITH'.what's wrong with my code, it's been a long time since I used SQL dataset. I'm into LINQ but I'm having problems with this kind of LINQ query so I'm reverting to SQL dataset.here's my code:
'Set up a data set command object.
Dim sSelectColumn As String = ("SELECT * FROM tblScanned WHERE LastName=" & sLastName & " AND FirstName =" & sFirstName & " AND MiddleName =" & sMiddleName)[code].....
I have a DataGridView with 7 cells, in every cell I'm into if i press escape the current row is removed thou an event i made named Public Event EscapeOnFirstRowPressed with no problem, and brings me the control to each initial state. The general idea of this process is when all the cells are fulfilled then
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In order to initialize my VouchersDGV Data Grid View I'm Using the following
DGV.AllowUserToDeleteRows = True
For i = 1 To DGV.RowCount - 1
DGV.Rows.Remove(DGV.Rows(i - 1))
DGV.Refresh()
Next
But when I'm runing it for the first time I take the error of {"Uncommitted new row cannot be deleted."} System.InvalidOperationException If I will continue and run my code and write a new row in my Data Grid and I will try to initialize again (now I have two rows, one has the data and the other is empty) I take this error {"Uncommitted new row cannot be deleted."} System.InvalidOperationException
I have a DataGridView. I only want to show certain rows. I do this by creating mask variable (0 or 1) in a hidden column and then use an If stmt to hide the rows that have a mask value of 1. I want to actually delete these rows (instead of setting their visible property to false). I need to comment out the two lines referencing the visisble property and put a line of code after the Else part of the If that removes the row in question. What is the correct syntax for this?
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My datagridview is bound to a data table. I want to filter the datagridview without affecting data table. I know one way is to use bindingsource, but binding source will use column names in its filter. But I want to enable users to enter any string in a textbox to filter. So I pass datagridview by reference to a function PassFilter which removes unwanted rows in datagridview. I can see that it does execute rows removal in datagridview. But the problem is that when datagridview is shown on the form, it is unchanged, the same as the data table. I do not understand why rows are not removed on datagridview The code is as follows:
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My datagridview is bound to a data table. I want to filter the datagridview without affecting data table. I know one way is to use bindingsource, but binding source will use column names in its filter. But I want to enable users to enter any string in a textbox to filter. So I pass datagridview by reference to a function PassFilter which removes unwanted rows in datagridview. I can see that it does execute rows removal in datagridview. But the problem is that when datagridview is shown on the form, it is unchanged, the same as the data table. I do not understand why rows are not removed on datagridview
The code is as follows:
DataGridView1.DataSource = table
PassFilter(DataGridView1, m_FilterQuick.strFilter.ToLower())
Private Sub PassFilter(ByRef datagridview As DataGridView, ByVal strFilter As String)
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My MS-Access database contains 30 "table" files with identical formats (e.g. Composer, Arranger,Lyricist, etc.) and I use a common VB.NET form and DataGridView for displaying and editing any one of the 30 tables. When a user makes a menu choice, the menu program puts the file name and its first field into two global variables and then shows a form that contains an unbound DataGridView. This other form then loads a dataset from the appropriate database table and programatically binds the DataGridView to the DataSet. (I clear the dataset before filling it.)
All goes well and three DataGridView columns are displayed for the first time. However on subsequent operations, the DataGridView retains the columns that were previously generated along with their column headings (but no data) and I get six DataGridView columns. On the third operation I get nine DataGridView columns.
I have unsuccessfully tried to obtain a count of the number of DataGridView columns so that I can remove them from the DataGridView but it always gives me a column count of zero.How can I accomplish the simple task of removing all columns from the DataGridView?
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how do I do that? Here is what I have below and I want to remove all the rows from the datagridview?
Dim dataGridViewNetworkDevices As DataGridView
For i As Integer = 0 To dataGridViewNetworkDevices.Rows.Count - 1
dataGridViewNetworkDevices.Rows[i].Remove??
Next
How can I chanage the code below to work with a datagridview:
Public NotInheritable Class DataColumnCollectionExtensions
Private Sub New()
End Sub
[code].....
How can I remove this particular part of the datagridview?
View 2 RepliesI have one datagridview and there some field are there for money dataType. But if user want to add (-) keyword then it should be display like -$10. if again user will click on (-) keyword then it should be remove i.e $10 .
View 8 RepliesI have one datagridview control and there one column are there for money data type. But if user press to minus (-) keyword then it should be display like -$10. and again if user will press on (-) keyword then it should be remove i.e $10 .
View 3 RepliesHow to remove the Check Box for only some rows? Anybody can share the code for that? See the pic. I need to remove the check boxes for alternate rows. I dont need for Row 1, Row 3, Row 5.
View 3 RepliesMy browser application has an option to display all the "href" elements of a web page in a datagridview.
I use the code below to populate the datagridview.[code]...
I am developing VB.Net application, here i am using DataGridView control to display data from database now it is displaying as follows
emp no emp name city Sal Description Salary
54 john NJ HRA 1000
54 john NJ DA 2500
54 john NJ BP 12500
but i need to display as follows
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Private Sub btnDelProfileURL_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnDelProfileURL.Click
Dim Count = (dgvProfileURLs.SelectedRows.Count)
MsgBox(Count)
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This code seems right but its not working. It's giving me an "Index out of range" error. If I change the upper bound of the loop to "(Count - 2)" the code works, it just deletes all except 1 selected row. So can't figure out why "(Count - 1)" doesn't work.
I tried this code to remove specific Rows that the column(0) cells equal= 0
For i As Integer = 0 To Form1.DataGridView1.Rows.Count - 1
Form1.DataGridView1.Rows.Remove(Form1.DataGridView1.Rows(i).Cells(0).Value = 0)
Why does the cell text show up with �square� characters where they should be extra space?
How to remove that square characters in datagridview?
I want to remove the highlighted part from the datagridview how to do
View 4 RepliesI want to add and remove Datagridview in VB.NET with button click event. Can it be possible.
View 2 RepliesI have a datagridview with two columns a text box and a combo box. I can add to the combo box collection but can't determine how to remove part of a collection. Example combobox has 10 items as follows: 1,2,3,4,5,6,7,8,9,10.
I only want to show a number 1-10 when another label has the same associated number.I have 10 labels named 1-10 but I only want the combobox to display a number 1-10 when the corresponding label has been selected previously. So, if labels 1-5 have been selected by the user than I want to have my dgv combobox to display only 1-5 and remove 6-10. I have searched but have not been able to find a similar post.
Yes its me again with yet another problem Ok so I've now gotten round to trying to display some data from my database and displaying it in a DataGridView Heres the critical part
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So am back again with dattagridview and comboboxes...sorry for the troubless.. Now let me come to my scenario aka problem..I have 2 dataviewgrids in my WINDOWS APPLICATION FORM (VB.net).The first grid populates some data from the SQLSERVER 2005 DB.When I click on any cell of the first grid, my second grid shows up and populates with the data corresponding to the cell which I have clicked in the grid 1.This is working perfect and so far so good.In the second grid I have 3 combobox columns and some textbox columns..The three combobox columns in this grid are also populated from the DB only usng datasets and datasource.In the first Combobox Column if I select one value, then the corresponding values are filled into the other textboxcolumns.This is also working good.The other 2 comboboxcolumns are also populated from database using different datasets..
Am about to add a master data ( i.e data into the first grid).it got added and after that a msgbox pops up sayn u must add data into the second grid as well.so the user is adding the data in the second grid.(all works except the new requirement).he added something into the first row by selecting the comboboxcolumns and also editing the other columns in the first row.(he havent saved this row.This will happen when he clicks the save button in the form not in the grid)he goes into the second row .Now here he should not see the item from the combobox1 which he has selected in row1.
How can I remove the first column in a datagridview. I mean the first column with the record pointer? I am using VB.NET 2005. Also I am not binding the control to any database.
View 6 RepliesWhat 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
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how to remove the selected rows from the DGV control
My grid is having as check box colum, if the check box is checked then i want to delete such rows i am having a piece of code, but is not working, i mean one row is getting left
vb.net
Dim Drow As DataGridViewRow
Dim iX As Int16 = 0
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