Delete The Final Line Of A DataTable?
Mar 1, 2012Is there a way to delete the final line of a DataTable? I use - DataTable.Rows.Remove()But how can I find out which is the final line in the DataTable
View 18 RepliesIs there a way to delete the final line of a DataTable? I use - DataTable.Rows.Remove()But how can I find out which is the final line in the DataTable
View 18 RepliesHow can be find out which file is going to delete when, user provides command like DELETE or SHIFT + DELETE or by programmatically gives DELETE command. Well I know about FileSystemWatcher Class, but this class doesn't provide information before delete...
View 1 RepliesIs it possible that when a new line (anywhere in a richtextbox) is added/deleted, then a line is also added/deleted in another richtextbox?
[Code]...
I am using this code to draw a line on a form using textboxes as the x and y coordinates. I then click the button with the code below that will draw the line.
Before the new line is drawn, I would like to have previous lines deleted first.
How can I delete these lines?
Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
Dim canvas As New ShapeContainer
[Code].....
You would think a search for this would show some results but I have had no luck.If I want to delete a line by a line number from a text file, how do I do that?
View 6 Replieshow to delete a richtextbox line, if the line only has one value. Ex:
[Code]...
i am having trouble deleting the individual rows in the datagrid. That is when the user select this row only this row will be deleted. i am getting some errors at the dataset there. the below is my code to delete from the database:
[Code]....
For Each row As DataRow In dtCustomerInfo.Rows[code]...
I am just trying to look through all the rows of a datatable and if the value in the column "ID" is not equal to the intCusID, then delete the row.[code]...
I have a basket which on Repeater Item Command i want to delete that item from the datatable.now my current code works fine if there is just one product in the table(one row), but when it has more rows i get the following error[code]...
View 6 RepliesI want to delete a row from a DataTable based on a query ... basically something like this...
Dim foundRow As DataRow() = myDataTable.Select(firstname = '" & fname & "' AND lastname = '" & lname & "' AND workdate = '" & mydate & "'")myDataTable.Rows(foundRow).Delete()
but obviously that doesn't work. The .Select is finding the row, but I don't know how to delete it from the DT.
At 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]...
i 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
I 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".
I have a listbox connected to a datatable. When i click a button, the marked item should get deleted. How?
View 5 RepliesI'm trying to delete the selected row in a gridview from the datatable but it seems like it's not deleting. in if statment Table.Rows.Count = 0 is not working and I'm trying this with one row in the grid view.
Protected Sub GridView1_RowCommand(sender As Object, e As System.Web.UI.WebControls.GridViewCommandEventArgs) Handles GridView1.RowCommand
Dim index As Integer = Convert.ToInt32(e.CommandArgument)
[Code].....
I've tried to delete a row from datatable ("klantbehandelingen") through contextmenu that has been add to a lbl and i r
Private
Sub cm_ItemClicked(ByVal
sender As System.Object,
ByVal e
As System.Windows.Forms.ToolStripItemClickedEventArgs)
Handles cm.ItemClicked
[Code] .....
there is two datatable at some datasetsone of them is tbl1 and fileds is (pcode,points) other table is tbl2 and fields is (pcode,stoped)"pcode" is equal at two tables
View 6 RepliesI want to delete the rows of a DATABLE that verify a criterion. Someone would be so kind to show me how do this.For example, I have a DataTable with "customers" and I want to delete customers who live in "Madrid"... criterion: CityCustomer='Madri
View 10 RepliesI want to know how to perform row delete to datatable which is a datasource to the grid.
In details: I have a datagridview (dg) and its datasource is set to dtItem. User will select some rows in dg and press 'delete' button.
dg.DataSource = dtItem;
I will perform a loop and delete the records. Here is the code eg:
foreach (DataGridViewRow drw in dg.Rows)
{
if (drw.Selected)
[Code]....
The problem is it didn't delete correctly. If user selects row index 0 and 1 in dg and delete it, it will delete the first one correctly and then finished cuz no more row is selected in next gridviewrow.
I tried google and didn't find what I want. may be because i don't know the correct keywords I should use to search.
I have lines like this in my text file
10.0 28 Blue (B1-T54 ) [1 01.69 65.4] 47234 -22234 181017 76921
6.5 28 Blue (B1-T55 ) [1 01.80 50.2] 48234 -21234 203852 76133
11.0 28 Blue (B1-T56 ) [1 01.80 64.9] 48234 -22234 181804 76133
[code].....
I've been search and I can't found an answer that works, I need to remove (delete) the last line in a RichTextBox1 in vb .net, I mean remove last line and 'breakline' too, but only the last, no others,
View 1 Replieshow can i delete line 1 from listbox?
View 13 Repliesok i have a textbox that look's like this [code]say my code grab's the word EON & ERN & HEN and send's it to 1 of my textbox's/i need those deleted so they cant be sent again to my textbox.[code]
View 3 RepliesI am trying to figure out a way to delete something inside a text file but keep everything around it.[code]....
View 4 RepliesI'm making a function that is supposed to delete a line from a textfile "test.txt". I'm having no problems with finding what line i want to delete. The basic idea is this: read the whole file with streamreaderdelete the linerewrite the file with streamwriter. My problem is the last, how can i completely remove the file content, and write another string in it, writer.writeline just appends a line.
View 2 RepliesI'm trying to insert a new line in a cell of my datatable. When I hover the cell it shows it like it should. Everything has a new line.[code]
View 1 RepliesHere is an example of a line:
H e l l o t h e r e !
I want to delete every other character so that it looks like this:
Hello there!
I have a program that reads a text file tab delimted using OLEDb I need to be able to allow the user to insert a user created record into the file which I can do. The problem is I need to be able to let the user edit that record. From my understanding you can not edit or delete with OLEDB only insert So I thought I would read the file using stream reader, find the line I want to edit and just delete it, rewrite the file, then let the user insert a new record?
Dim strDelimiter As String = vbTab
OpenFileDialog1.InitialDirectory = "C:\"
OpenFileDialog1.Filter = "Text Files (*.txt)|*.txt"
[code]....
how can i delete the first 6 letters from a line in any TextBox?
View 39 RepliesI have a RichTextBox.
I want to input an integer and the RichTextBox to go to that line and delete all lines above it.
For example, if I have 100 lines in the RTB, and I specify "25" as the integer, I want lines 1-25 deleted and for the RTB to keep 26-100.