Datatable Rows Remove Not Working?
Jul 15, 2010I am trying to delete rows from datatable using code below,
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Remove All Rows In Datatable?
Jul 29, 2010I have a simple application that uses a database to store usernames and passwords.I have a hidden control that, when activated,should clear all usernames and passwords from the datatable.Then, one admin account is added. I have tried the datatable.clear method BUT while it throws no errors, it doesn't clear the datatable.I have also tried the datatable.reset method, with the same problem. I am now trying this method:
Dim row As DataRow
For Each row In Authenticate.Logins
row.Delete()[code]....
Sql - Remove Dupe Rows From DataTable
Sep 10, 2010_CheckPayees = ds.Tables("Payees")
_CheckPayees is a DataTable variable. After it is set with the code above, I would like to go through it and remove duplicate rows from it. These rows have to be exactly dupes though, say two columns have matching values however another one doesn't, that's not considered a dupe.
VS 2010 : Combine Similar Rows In A Datatable (the Rows Only Differ By One Column)?
May 8, 2012I have three sub tables that I want to process. For each I want to combine the rows, as they are only different by contents in the second column(I want to do the same to the fourth column, later):
'Sub table 1
xx|C201 |02300877 |Samsung |....
xx|C201 |02300877 |Toshiba |....
xx|C213 |02300877 |Samsung
[code]....
p.s. For the fourth column, Manufacturer information , I want to do the same and I'd probably get something like this for the final table:
xx| C201,C213,C606,C619 |02300877 | Samsung
xx| C201,C213,C606,C619 |02300877 | Toshiba
xx| C303, C305,C712 |02301163
xx| C207, C209, C708 |02301165
Remove Keywords From Excel Rows, But Not Delete Rows?
May 5, 2009I have an Excel sheet that looks like this.
View 1 RepliesAdd Rows To A DataTable Without Losing The Previous Rows?
Apr 14, 2012Dim _tableBackLogs As System.Data.DataTable
Do While i - 2 > 0
_tableBackLogs = Global.DataAccess.GetDataTable("SELECT SubjectID,SubjectName,Grade FROM SubjectPI WHERE RegNo='" & CInt(HttpContext.Current.Session("userName")) & "' AND Status='Fail' AND Semester='" & i - 2 & "'")
i = i - 2
Doing this replaces the previous data in the DataTable. I want to retain the previous data i.e i want the new rows to be added to the DataTable w/o replacing the previous rows.
DGV Rows To Datatable?
May 29, 2009I have a DGV that has a datasource to load the rows I need for display.
Now, I need to save the selected rows to a DataTable.
binding the DGV. I created the DataTable in my DataSet dsProfiles1 and created a BindingSource - bsDataTableDGV
DataTable:
ClientID Int32 not null PK
ClientName String not null
ProgramNo Int32 Not Null
[Code].....
How To Add New Rows Into DataTable
Feb 15, 2012I have a form with a textbox and a add button. User can write a name down on the textbox and click add button. it will save in a datatable with auto ID. After that, the textbox is cleared and the user can write another name on the text box and click the button. This should add to the existing datatable on memory with existing ID + 1. Show on the gridview. (this is just for display purpose to confirm it works)
I have a datatable like this.
Button1.click() event
Dim name = txtname.Text
Dim dt As New DataTable
dt.Columns.Add("ID", GetType(Integer))
[Code] .....
At the moment I have sometime like the code above. in the real program, it is not just name and it is not just one datatable so i just mock up some code. And this code for aspx.
<asp:TextBox ID="txtname" runat="server">
</asp:TextBox><asp:Button ID="Button1" runat="server" Text="Button" />
<asp:GridView ID="GridView1" runat="server">
</asp:GridView>
Cannot Remove Rows In Datagridview
Aug 11, 2011My 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:
[Code]...
Cannot Remove Rows In Datagridview In .net
Aug 11, 2011My 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)
[code]....
Remove All The Rows From A Datagridview?
Dec 10, 2010how 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
.net - Flip Two Rows Of A Datatable?
Jan 14, 2011I Have a datatable in .net. I need to flip the location of two of them. For example, a datatable that the select statement had an order by priority clause. The user wants to up the priority of a single row by selecting it and clicking increase priority, how do i move a row up (AKA flip two rows)
View 2 RepliesAdd Rows To A Datatable With Parallel.for?
Jul 13, 2010I have this sub :
Private Sub error_out(ByVal line As Integer, ByVal err_col As Integer, ByVal err_msg As String)
Dim ln = t_erori.Rows.Add
[Code]....
I suspect this is because it's trying to add the same row twice.
How can i make this work ? Or what else method could I use to do this ?
I need this datatable because my app is writing some results in there, but any other method to store the results that works with parallel.for would be ok.
Asp.net - Merge Rows In Datatable Which Had Same Value (VB)?
May 13, 2012I have one datatable tempDT with value :
[Code]...
The problem is I want merge duplicate serial_no into one row which the value of testong adding to new column. I have tried many ways, but I can't find the solution. Here is my code behind :
[Code]...
Datatable Compare Rows?
Apr 17, 2009I have a datatable object, which is populated from a webservice.Apparently, the web service just throws everything (data) back to me. The data which gets in my datatable looks like this:
Dept Code Value
Science ABC 5
Science ABC 6
[code].....
Delete All Rows In Datatable?
Apr 8, 2010At the moment I use this code but I have 591 rows to delete and it takes forever to loop and delete each row on an individual basis
[Code]...
Delete Rows From Datatable?
Feb 10, 2012i need to delete some rows from datatable
i don't know the indexes i have 2 columns to idendify the rows to delete
how to achive this in easy way
i don't want to delete inside loop wat will happen if i have 2 million rows? tats why i don't want to delete indendify the rows and delete in loop
How To Delete Rows From DataTable
Mar 20, 2009I have a Datatable in my code in vb.net. I need to delete rows from the datatable. The name of my Datatable is "temptable".in my row deleting event of a Gridview control. I wrote code as follows:
In the Row_Deleting event of Gridview:
temptable.Rows.Remove(Gridview1.Datakeys(e.RowIndex).value)
But,it shows an error as follows:
"Cannot cast System.Int32 to System.Data.Datarow".
Loop Through The Rows Of A Particular DataTable?
Jan 9, 2009IDE : VS 2008,Platform : .NET 3.5,Here is my DataTable columns :ID Note DetailI want to write sth like this :
View 8 RepliesSet Value For All Rows In DataTable Without For Loop
Feb 21, 2011I'm trying to set the same value for all rows for a single column in a datatable without using for loop. Any faster methods to achieve the same.
View 2 RepliesWay Of Accessing Datatable Rows?
Feb 22, 2010am just curious to know...which is the better or more efficient way of these two?
Note: tblOD is a DataTable
For dtrows As Long = 0 To tblOD.Rows.Count - 1
dgv1.Rows.Add(tblOD(dtrows)(0), tblOD(dtrows)(1), _
[code].....
Way To Access Datatable Rows
Jun 13, 2011Way to access datatable rows
[code]...
DataGridView - Remove The Check Box For Only Some Rows?
May 10, 2012How 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 RepliesDatagridview Remove Duplicate Rows
Apr 8, 2010My 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]...
Remove Multiple Rows In Datagrid?
Jun 12, 2009I have the following code in which it supposed to remove rows that have the first column checkboxes checked, but it only removes one row at a time.If you have more than one checkbox checked, you have to click the command button each time to remove the row.It seems that the logic is correct to remove multiple rows if more than one checkbox is checked, but it doesn't work.
Public Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
For Each row As DataGridViewRow In DataGridView1.Rows
[code].....
Remove Rows From Gridview With Jquery?
Dec 7, 2011I am new using Jquery. I am using vb.net 2008, and I have built a gridview and populated it with data. I am trying to use jquery to go in and remove rows if one of the attributes of the row does not equal the user that I am currently looking at.
View 1 RepliesRemove Selected Rows From DataGridView?
Apr 22, 2009Private Sub btnDelProfileURL_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnDelProfileURL.Click
Dim Count = (dgvProfileURLs.SelectedRows.Count)
MsgBox(Count)
[code]....
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.
Remove Specific Rows In DataGridView
Nov 15, 2011I 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)
VS 02/03 Remove Duplicated Rows In Dataset?
Jun 10, 2009I have a dataset with 12 columns. this dataset can be filled with > 3000 rows
This dataset is bounded in gridview (third-party).
How I can remove the duplicated rows in this dataset?
Remove A Datatable From Datasource?
Dec 6, 2011I have a datasource attached to an Access DB. I have a problem if I remove a datatable from my datasource(which contains lots of datatables). I have to manually remove the reference to that datatable from the designer file for each form that uses the dataset.
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