VS 2010 Delete A Row In Datatable?
Dec 10, 2009I have a listbox connected to a datatable. When i click a button, the marked item should get deleted. How?
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VS 2010 DELETE Rows In DataTABLE Verifying A Criterion?
Feb 15, 2010I 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 RepliesVS 2010 Perform Row Delete To Datatable Which Is A Datasource To The Grid?
May 11, 2011I 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.
Delete A Row In A Datatable?
Dec 7, 2011For 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]...
Delete Row From DataTable?
May 15, 2010I 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 RepliesHow To Delete A Row From A DataTable
Feb 24, 2010I 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.
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".
VS 2010 : System.ArgumentException Was Unhandled Message=DataTable 'get_item_list' Does Not Match To Any DataTable In Source
Apr 21, 2010I am working on a project that takes an xml schema and xml data files and places them into a DataTable, the 2 files are generated from a working table that i have written to disk. I wish to load these 2 files into a DataTable. Here is What i have
vb.net
Friend Function CreateTable(ByVal tableName As String) As Boolean
Dim table As New DataTable(tableName)
table.ReadXmlSchema(tableName & ".xsd")
[code]....
this however produces the following error on line 3
Quote:
System.ArgumentException was unhandled Message=DataTable 'get_item_list' does not match to any DataTable in source.
get_item_list is the parameter passed into this function (tableName)
VS 2010 Datatable - Summarize Multiple Occurrences Of An Item In A Datatable
Jun 5, 2012I have a datatable that has a resource in one field and hours used in another, it looks like this -
Resource Hours Used
Manager 1
Accountant 1
Field Staff 2
Accountant 3
Manager 4
Manager 1
Administrator 6
Field Staff 4
Manager 0.5
Administrator 1
What I want to do is be able to create a summary of the data table above that groups multiple occurrences of a resource and adds up the hours used for that resource, creating a summary that looks like this -
Resource Hours Used
Manager 6.5
Accountant 4
Field Staff 6
Administrator 7
Delete DataRow From DataTable On RowCommand?
Apr 9, 2012I'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].....
Delete DataTable Row Through Context Menu
Mar 7, 2011I'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] .....
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 RepliesCompare Two Datatable And Delete Some Rows By Linq?
Nov 18, 2010there 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 RepliesVS 2010 Delete Top 1 - Delete A Number Of Records In A Table From The Last And Forward?
Mar 16, 2011I'm trying to delete a number of records in a table from the last and forward. My idea is to use sql like this: delete top " & variable & " * from table where ID = something It gives me a general sytax error. Is it at all possible? Fuga. Edit: I also have the order by statement there. I just forgot to put it in the question.
View 5 RepliesInsert, Edt, Delete And Search Access Database Using DataSet/DataTable/DataAdapter In Code Through Datagridview
Mar 23, 20101. Can someone show me sample codes on how to do that ?
2. I encountered a problem with the INSERT sql statement. I keep receiving syntax error in insert statement exception. Is there anything wrong with the statement ?
[code]...
VS 2008 Datagridview - Loading Data From Sql Server Datatable - Modify Or Delete The Product List
Feb 3, 2012I have a vb.net form to add, modify or delete the product list..i have a datagridview in which i m loading data from sql server datatable...now i have a text box which accepts code for the product..i want that when i press a key, all data starting with that key should be highlighted in datagridview.....
eg
i have product codes
A001
A002
A003
C001
D001,, etc..
Now i press A in text box...in datagridview all data with A should be highlighted
How To FileInfo Before, Delete Or SHIFT + DELETE, Process Final Delete Of File
Feb 13, 2011How 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 RepliesVS 2010 Delete The Duplicate Rows In A Datagridview In Vb 2010?
Apr 26, 2012I have a datagridview extracted from a csv file. It displays duplicate rows. How can I delete those duplicate rows from the datagridview? replies would be precious.
[Code]...
VS 2010 : Add New Row To Blank Datatable?
Mar 24, 2011I try to view a datagrid with one empty row in it when the form loads. The datagrid has to be bound to a datatable all the time.I get a NullReferenceException with the following
Dim dt As DataTable
dt = CType(Me.grdDataGrid1.DataSource, DataTable)
Dim newrow As DataRow = dt.NewRow()
newrow(0) = 1100
dt.Rows.Add(newrow)
The error occurs on the line where dt.NewRow() is used.The problem occurs when the datatable (and the datagrid) is empty. If they have data, this works ok.What do I have to do to get this to work with empty datagrids?
VS 2010 DataGrid & DataTable?
Mar 17, 2011I have a DataGrid that a user is sorting, problem is that the sorted results are not being updated in my DataTable (which makes another function fail later). I have tried calling AcceptChanges() after the sort is done, but that isn't updating the DataTable. dtMessage.AcceptChanges()How can I have the DataTable updated after the sort to diplay what is displayed in the DataGrid ?
View 2 RepliesVS 2010 DataTable Control
Sep 10, 2011When I dispay data sets in a Datetable control. It started with showing the focus on first cell ( i.e. cell(0,0)). How can I set the initial focus to other cell (say cel(3,4))?
View 2 RepliesVS 2010 Get A Subset Of Into Another DataTable?
May 19, 2011I have a DataTable that I need to get a subset of into another DataTable to bind to a control. Is there an easy way to do this?
View 4 RepliesVS 2010 SQL Datatable Error?
Mar 22, 2012I have an sql database with multiple tables. I have been adding new columns to one of the tables as I need them, but now suddenly it has stopped allowing me to add columns.Everything works as usual until I add the 150th column to the table. When I drag the table from the server explorer to the dataset designer i get the following error:"Some updating commands could not be generated automatically. The database returned the following error: Dynamic SQL generation is not supported against a SelectCommand that does not return any base table information.If I remove the 150th column, everything works great. I tried using the wizard to regenerate the select and update statements, but it fails with the same error.
View 5 RepliesVS 2010 : Convert Datatable To JSON?
Mar 26, 2011I want to be able to turn a datatable or dataset or the results of my SQL queries into JSON - purpose is for a WCF service which will not do it.
View 2 RepliesVS 2010 : Save Image To Datatable?
May 11, 2012I have picturebox that the user can import an image, and then save it to the datatable. I can save it with no problem, and the image, which is a logo, will populate onto my crystal reports pages.My issue, is that I want the logo to automatically load into the picturebox when the user opens my settings form. How can I do the opposite of the following:
'set the company datatable for sub
Dim borrowersrow As PlannerFilesDataSet.CompanytableRow
'use only the first row
[code]....
VS 2010 Add And Configure A DataTable To Project?
Dec 10, 2009Is it possible to add a Datatable to the project, add columns to it, and then add rows with data in it that i can use in my project?
I need to store some data in my program and i thought the best way was a datatable, but i also need to add some data that exists in it when i build my pogram.
VS 2010 Adding ArrayItems To Datatable?
Jul 20, 2010I have an array which holds the following items
for example
Quote:
myArray(0) = (1)
myArray(1) = (4,2)
myArray(2) = (10,15,20)
[Code]....
and then am trying to add other column based on items available in myArray().
VS 2010 Check Whether A DataTable Is Populated?
May 15, 2012i defined a list of DataTables
Dim PreSubTables As New List(Of DataTable)()
Then I parse some source files and depending on the data, possibly none of the tables in the list PreSubTables2 might be populated, so it's just an empty list. Later on when i refer to the first table in the list , I get "index out of range error"
If (PreSubTables(0).Rows.Count > 0) Then ...
' just dealing with the first table: PreSubtables(0)
For ii = 0 To (PreSubTables(0).Rows.Count - 1)
[Code]....
I'm just trying to come up with a line that checks whether the(at least the first)Table in the list is populated, before I can print it out or do other things.
