Adds A New Row From A Source Table Called "objTablaOrigen" To A Final Table Called "objTablaDestino"?
Feb 26, 2007
My code Adds a New Row from a Source Table called "objTablaOrigen" To a final table called "objTablaDestino". This tables are passed ByRef because they come from a DataSet respectively. objRowNuevo is The Row that will be added to "objTablaDestino" The data from "objRow" is well copied to the "objRowNuevo" (that is the new Row with type of objTablaDestino).
'The problem occurs when the instruction Add is executed. ¿What happens? The new row is added as well, but this generates an Exception with the next message:
[Code]...
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Jun 5, 2011
I have an sql table called Stock with two fields called StockID and StockCode. I want the user to select the stockcode from a combo which in turn populates the stockid for that item into a lable on my form. I have already populated the stockcode into the combo but dont know how to compelte the rest.
Imports System.Data.SqlClient
Public Class cbo2
Private Sub cbo2_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
[CODE]...
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Oct 25, 2008
I've been trying to create a table element like this in VB I just can't find one that matches in the toolbox.
[URL]
what it's called.
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Nov 7, 2008
I'm getting ok connection to the database... but it's always telling me that I don't have permission to use the SELECT command with some table called 'proc'.
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Jun 16, 2012
I have a field in my table called RentPaid, its set to bit data type. On my form I have a button called Pay Rent, when the user clicks that button I want my checkbox set to true.
I've tried both of these:
Me.chkRentPaid.Text = True
Me.chkRentPaid.Checked = True
Neither seem to be written to my SQLExpress database, however EVERY other field on my form does. The field shows up in my datasource for that form, I just dragged it over to my form with the rest of my fields.
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Jan 4, 2010
This is code I use to display Date from Access Database Table called RecordList
Sub RC1Fill()
ADBConnString2()
conn = New OleDbConnection(NewAdbconnstr)
cmd = New OleDbCommand()
daRC1 = New OleDbDataAdapter
[Code]...
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Feb 9, 2011
i was wondering if it possible to have a condition where lets say you have a column in the datatable called amount and a textbox acting as the filter called say maxamount to set it so the rowfilter when filtering the table will sum the number in the amount column until the number in maxamount is met, then stop and only return the rows where the total sum of the amount column is equal or less than the maxamount value, so i guess if the next row takes us over the maxamount it discards this row and returns the rows previous to it. is this possible using datagridview rowfilter or should i be loooking elsewhere to achieve this?
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Aug 11, 2009
I have a form called FrmPracDetails which is built up with a List view called LvwColProc. Therefore when you click a field on the LvwColProc it takes you to another form called FrmColProcessing, here you can make changes to certain fields which are also present on FrmPracDetails. What I want to do is when you make changes on FrmColProcesing and Click the Save Button (which calls the Save function)the changes appear instantly on FrmPracDetails. Please note, FrmColProcessing will always be open next to FrmPracDetails. I have tried to put this code in the Save function present in FrmCol Processing as shown below, but it doesnt Refresh FrmPracDetails form. [code]
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Apr 2, 2012
I have the following line of code in my program:
JCL_History.Enqueue(JCL_History(I))
This JCL_History object is basically a Generic.List encapsulated in a wrapper and has the following method:
Public Sub Enqueue(ByRef value As String)
If Members.Contains(value) Then
Me.RemoveAt(Members.IndexOf(value))
[Code].....
In my testing I have 2 items in this JCL_History list. When I call that first line of code I posted (the one that invokes Enqueue) with I = 1 I expect the first item to be shuffled to the bottom and the second item to be shuffled to the top.
After the thread returns from Enqueue I notice that this is exactly what happens to my list, HOWEVER if I hit the "step_in" button after the execution of Enqueue I go into the Default Property's set method where Index = 1 and value = and it screws everything up, because the item that got shuffled to the end (index 1) gets overwritten by the item value shuffled to the top.
So basically the set method on the default property is getting called at what I think to be a completely ridiculous time. What gives? By the way I'm running VS2005 on XP.
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Feb 4, 2012
i just got 1 question how do u create a (in excel ) variable table (database) inside a function which could be called for filling and reading through "for to next" loop module
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Apr 11, 2012
Can you look at my coding and let me know what I'm missing or doing wrong?I have a SSRS report that is called from a ReportViewer control and the ProcessingMode for this control is Remote. The report also has 1 parameter in it's DataSet.In the code I placed a MsgBox to make sure the code is finding the parameter and returning the parameter name. I am trying to stick the value of 10 into the parameter for playerID 10. Data for this player does exist.
I believe I need to add some more code to make this work but I'm not sure what else to add.
When the code executes the report is displayed but no data is shown in the report.
[Code]...
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May 13, 2010
I recently found an awesome tool called "Freemind" that is called a 'mind mapping' program. It's similar to MS Visio but way cooler and more automated.I reeeallly would like to integrate this into a VB.net Form, but how?
Has anyone seen or heard of mind mapping inside VB.net before? Are there programs out there already that work with VB.net or anyone have an example they have seen / built that works?
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Aug 9, 2011
THis code extract a value from a table to a var...
Dim var_IES_fornecedores as double = 0
For Each dRow In ds.Tables("Tabelavalor").Rows
If dRow("numeroconta").Equals("221") Then
[CODE]...
This is the problem...the numbers after the period should be just 2 and not a lot of numbers...everythin wrong with the code?
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Nov 23, 2009
I am looking for a logic that loops to all records in a temptable and checks if the record exists in the final table (structure is different, only some fields are to be inserted in final). When the record does exist in final, a record should be created in a table duplicate.
[Code]...
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Aug 30, 2009
I want to add a new table in my accdb and copy the content tfrom an existing table into the new one.
Is there an easy way to do this?
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Dec 21, 2011
I have a data table whose one column is related to a column of another table. I have a listbox in a form which shows a column (which is sorted by another column value by ORDER clause) of the parent table and other columns are in textboxes. The child table is represented by a datagrid. When I add a new item in parent table and click save, the newly created item is listed at the bottom of the listbox violating my ORDER clause. When I wrote some codes to fill data again after updating, it shows an error message[code]...
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Feb 23, 2010
How do I copy a table to another table without overwriting the contents of the second table?
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Aug 5, 2011
What code I need to search a whole table (not just one column). I can already search a column but how do I search the whole table for a string .
source1.DataSource = ds.Tables(listboxselect)
Grid.DataSource = source1
source1.Filter = "id = " & searchtxt.Text
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Dec 3, 2009
Resources: Visual Studio 2008 Pro (currently in 90 days trial)
Platform: OS - Vista Home Prem 64-Bit
Language : Visual Basic
I'd like to bind my textbox into two (column)from different table is it possible to do this? I already know how to bind (one-to-one) controls and table.
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Aug 7, 2011
I want to change the source data for my pivot table in Excel using VB.Net to a named range.
I have : table.ChangePivotCache(wb.PivotCaches.Create(SourceType:=Excel.XlPivotTableSourceType.xlDatabase, SourceData:=sheet.Names("name_of_NamedRange").RefersToRange))
Exception : The parameter is incorrect. (Exception from HRESULT: 0x80070057 (E_INVALIDARG))
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Jul 13, 2011
in the .net dll (named "Calendar") I have a public class called clsCalendar that has several public properties and functions. In the Calendar project properties I have checked "Register for COM Interop" on the Compile tab. Also on the Application tab I clicked the "Assembly Information" button and selected "Make Assembly COM-Visible".
I have tried every tip/idea I can think of that I stumbled across such as running sn.exe and then in the Signing tab of Calendar properties checking "Sign the Assembly" and picking the .snk file created from running sn.exe.I have tried running "Regasm.exe" against my Calendar.tlb file with the /Codebase option. Nothing seems to work.When testing in a .net app, I needed to code as "new Calendar.clsCalendar" to get it to work. Our existing vb6 apps that need to call the dll simply say "new clsCalendar" and I can't change these apps.
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Jun 2, 2011
when i try to add new data source aftre selecting the table & befor finishing i got the message..An error occured while creating the new data source
An error occured while generating the data source and in error window following error does come Custom tool error: Failed to generate code. Failed to generate code. Invalid access to memory location. [code]
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Sep 19, 2009
Re DataGridView Sorry don't really have any code - just a whole project. Basically I changed the underlying Access (accdb) Table by adding a new field, The new field shows up in the DataSources section of the Solution Explorer and in the "Edit DataSet with wizard" page but when I attach the binding source to a datagrid view, the new field is not there. I also created a new bindingsource but still not there.I just noticed I've another table where I changed the names to something more meaningful, and the old names are still there and the data for those fields doesn't display in the DataGridView
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Apr 14, 2009
I have inherited an application at work that someone else started creating, right now about 1/2 of it is functional and is in use. My problem is that it is all done in 2.5 ?? and I am trying to step through it all to figure out how it works. I have always created my own binding sources, adapters and data tables.
One of the things I need to do is add a field to the fm_fieldman_master data table. I add the field in the db (SQL Server 2005)table, I come into VS and refresh the datasource, I then add the field to the fm_fieldman_master data table and the Fill,GetDAta() query I go into the designer and create all the attributes for the combo box
[Code]...
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Oct 6, 2010
I am struggling with a simple datatable issue. The following takes a data table that is on the form and adds an arraylist to it as the data source. The data that shows up in the datatable is the length of the value of the element in the arrayList.
test.Add("cjdsnthegtrk")
test.Add("cjdsk")
test.Add("cjdsk")[code]....
How do I control what is displayed in the columns? What I am ultimately trying to do is have a datatable that the operator can edit and the changes reflect in the underlying data structure.
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Jan 13, 2012
As I have no idea on how to retrieve access data at the specific location in the table, so I wrote VBA code t export the entire access database to a datagridview which is located in the form1. There's a column of datagridview contain complete address information of a image. I'm thinking a way to link image source (of form 2 or xaml file) to the the column so that the image will be displayed. is there any code to get cell value at the specific location in the table? In excel VBA, sheets("Sheetname").Cells(rownumber, columnnumber).value is used to get the cell value, but how about code for this case?
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Feb 14, 2011
Can you please explain me and/or show some good tutorials how to do it?It seems pretty complicated because visual studio usually does it all for you and that made me stupid and not to do anything about it.Things I don't know to do in code but I know VS does it for me:
[Code]...
I'm sure there is a good tutorial somewhere on the internet. I'm okay with doing it with designer, but now when I have a situation where I can't use MDI container but tabcontrol.Other solution would be to make a MDI container out of tabcontrol. Is it posible or only other form can be MDI container.
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Mar 10, 2011
I am developing Restaurant POS Application with home devliery module. Customer call to restaurant and give the order. so whenever customer calls comes i need to show the pop-up on my desktop application with particular customer information. Please guide me how to do this. I am using visual studio 2008 (vb.net)
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Sep 8, 2009
Private someSub()
If someBoolean = True Then Exit Sub
' do some great work because someBoolean is False
End Sub
I know there is a name for this. The idea is to check something and if it isn't what you want then you stop code processing. I thought it was called "escape pattern", but Google isn't confirming that name.
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Jan 8, 2010
So I've got some code that I've written in C and compiled into a DLL. This code is called by my VB.NET code. That interface is working fine, but I need to debug some of the C code. But obviously since it's not in VB I can't use the Visual Studio debugger. I've tried attaching a GDB debugger to the process while it's running. It lets me set the breakpoints and it even stops at them, but it doesn't let me see the lines of code. My code was compiled with debug information, so I don't know why it won't let me see it.
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