Keep Dataset Changes While Coding?
Apr 19, 2009I have a dataset which i'm sure that i am able to change the data held wihin it. But the datachanges don't stick when i stop running the prog and restart.
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Update A Single Table Of A DataSet Using A TableAdapter Without Hard-coding The Table Name?
Nov 13, 2009I have a project which contains a large number of lookup tables, and I have all of these lookup tables represented in a single typed DataSet, which contains TableAdapters for each lookup. I've designed an editor for these lookup tables, which should allow editing of one of these at a time. My front-end is written in VB and WinForms, the back-end is a SOAP web service; I can successfully pass the changes to the DataSet back to the web service, but can't find a way to use a TableAdapter to update the single table that has been changed.
What I'm trying to do is instantiate the appropriate TableAdapter for the updated DataTable by sending the name of the table back to the web service along with the DataSet, then referring to the TableAdapter with a dynamic name. The normal way to instantiate a TableAdapter is this:
Dim ta As New dsLookupsTableAdapters.tlkpMyTableTableAdapter
What I'd like to do is this, but of course it doesn't work:
strTableName = "tlkpMyTable"
Dim ta As New dsLookupsTableAdapters(strTableName & "TableAdapter")
Is there any way to achieve this, or am I taking the wrong approach altogether? My other alternative is to write separate code for each table, which I'd prefer to avoid!
Hard Coding Vs Soft Coding
May 7, 2009Say we have a DataGridView on the main form. I can chose to establish its properties by code or by selecting them in the Properties panel. Is there a difference between these two techniques, a loading time penalty in any of the cases especially?
View 5 RepliesDataSet Editor - Allows The User To Edit A DataTable In A Strongly-typed DataSet
Mar 15, 2010When the user clicks an "Edit" button on my form, I want a box to come up which allows the user to edit a DataTable in a strongly-typed DataSet. What's the best way to do this?
View 2 RepliesIDE :: Dataset Code Behind Datatable.ColumnChanging Event Firing / But Dataset.HasChanges Property Not True
Jan 28, 2010I have code running in the Datatable.ColumnChanging event in my dataset. This dataset underlies a form and conventional drag/drop controls are in place for data entry.when the event triggers and runs, I am running code in the form that checks the dataset.HasChanges property. It is showing False. But this is immediately after the ColumnChanging event has been triggered.Okay, I see by others posts and MSDN that .HasChanges will only be true after moving off the row with the changed column. I have also noted lots of discussion about the advanced binding property of DataSourceUpdate Mode, but that does not address this issue.I guess I can do this by checking the state of the row for the binding source. Just seems odd that the event behind the dataset can be triggered and that does not change the dataset.HasChanges property.
View 3 RepliesSystem.Data.Common.DbDataAdapter.Fill(DataSet DataSet)
May 14, 2012I have tried everything I can to get beyond this error which shows below as <<<<< error here. It is trying to fill a dataset from a data adapter. If I change the SELECT statement to just SELECT * FROM xTable I get the correct number of records in each table. But anytime I try with a more complex statement I get the error message shown below which indicates System.Data.Common.DbDataAdapter.Fill(DataSet dataSet. I've completely erased all data and entered a new set of test data so I know there is no problem with relationships. Each table has primary key which is foreign key in other table. IS there something wrong with the Imports section: Imports System
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.net - Copy Data From Dataset To A Type Dataset Using Automapper?
Aug 24, 2010i am trying to copy data from a standard Dataset to a Type Dataset (XSD) of same table structure. i want to use Automapper to do that one. So how can i do that using automapper?
View 1 RepliesFill A DataSet On Application Startup And Use Dataset Other Form?
Jun 5, 2010I need to pick all data in my application from my database and use it in my form
my question : how to pick all data in my application then i use it
Loop Through Dataset Updating Data From Results Of Another Dataset
Jun 22, 2010I have two Datagrids, One grid has all the customers garments on it with style number and contact length. The other grid has the users who have garment issued to them. the style number is in both grids. I need to loop through the users grid and say if the contract number is 1 from the first grid then the contract date on the second grid will be todays date + 365 days (year contract) I have looked at using a stored procedure and also a for each command but I am just getting stuck with it all. [Code]
View 1 RepliesSaving Dataset To Database Which Has Imported Rows From Another Dataset
Jan 4, 2011I have a problem saving a dataset which contains rows that i have imported from another dataset. i can successfully view the imported rows in a gridview but i cannot commit the rows back to the database.
View 2 Replies.net - Combine Multiple Dataset Columns To One Dataset?
May 19, 2010I have multiple datasets that I would like to combine into one. There is a common ID field that can be associated to each row. Calling Merge on the dataset will add additional rows to the dataset, but I would like to combine the additional columns. There are too many fields to do this in one query and therefore would make it unmanageable. Each individual query would be able to handle ordering to ensure the data is placed in the correct row.
For Example lets say I have two queries resulting in two datasets:
SELECT ID, colA, colB
SELECT colC, colD
The resulting dataset would look like
ID colA colB colC colD
1 a b c d
2 e f g h
Repointing A Report Dataset To A Test Dataset
Feb 18, 2011ok, I've finally got my test database issues sorted out, however now I need to actually modify my existing report to add the two new fields from my test database. I have made a copy of the report so that I am not modifying the original. I have deleted the two old fields and now want to add my two new fields in there. In the Field explorer window, I see an object called "dataset1" and when I expand it, it is using a view that includes fields from the table that I added my two new fields to.
The problem I see here is that I have gone in and modified the view to include these two new fields in my test database - but again, they are not showing up as selectable fields here. I am just assuming that "dataset1" is somehow pointing to the live database again and that I need to change the datasource location.In my solution explorer, I see an object called "dataset1.xsd" but the properties of that do not tell me much about where it is actually pointing to...
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VS 2005 Typed Dataset Vs UnTyped Dataset
Nov 25, 2009I want to access data using both the datasets.
Private Sub Button3_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button3.Click
Try
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In my code i have dataset name ds and table named Info1,when i write ds after that how tablename is coming,its not possible? How to do that ?
Asp.net - Geocoding A Dataset - Map A Dataset Of Addresses On A Map
Aug 2, 2011i am looking to map a dataset of addresses on a map. basically, i want the users to type a street name in my town and be able to see the houses that have signed up already on that street. so a pinpoint should show up on the houses that came up on the dataset.
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C# - .NET Dataset Design - Have A Dataset For Each Table?
Jul 23, 2010I have some concern about designing Datasets. I was told that it would be good to have a dataset for each table for maintenance purpose. Because frequent change in database tables is expected, having one dataset including every tables would be pain to make the corresponding change in the application.
Q. is it good approach to have a dataset for each table ( I would end up having 30~40 datasets for each db table using Stored procedure) ?
I have a separate project for commonly used datasets. each project include "dataset project" as a reference, and use it by including needed dataset into Forms, classes, etc.
Q. Does this approach makes the whole system to be slower? If I have a set of datasets as a separate project, it would be beneficial, since It will be easier to make a change (I only need to make modification in one place)
DataSet Transformation To New DataSet Group By (x)?
Dec 3, 2009it returns date, and value by date.
for ex:
01.01.2009 454
02.01.2009 785
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Datatype Of A Dataset - Filling A Dataset
Feb 26, 2010I am having difficulties with Filling a dataset. It seems to be automatically assigning a datatype to the column based off of the first field of data it finds in that column. The column sometimes contains an integer, but it may also contain letters and numbers. If the first field is an integer, it says the fields in the column that contain a letter are DBNull. I'd like for the entire dataset to be formatted as a string/text type since I do not know what the values will be that I'm importing 100% of the time. How do I tell the dataset to expect a certain datatype for all columns and rows i'm going to import?
View 19 RepliesDeclaring Variables With New DataSet Vs DataSet?
Apr 16, 2010What is the impact of creating variables using:
Dim ds as New DataSet
ds = GetActualData()
where GetActualData() also creates a New DataSet and returns it? Does the original empty DataSet that was 'New'ed just get left in the Heap?
What if this kind of code was in many places? Would that affect the ASP.NET process and cause it to recycle sooner?
Get Dataset From A Grid Which Has Already Bound To A Dataset?
Jan 11, 2012I have a datagrid which is already bound to a dataset, I need to get this dataset,make changes on some data, then rebind the datagrid with the modified dataset.
here's my code
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MS Access - Dataset - How To Reset A Dataset
Jun 9, 2011I have a form that has 1 text box and has 2 queries that locate the data. One is by customer ID and the other is by customer last name. They both work but when the code works and the user enters a customer ID and the query locates it then enters a customer last name it also locates it. If the user enters the same customer id again the query seems to fail. This is why I'm sure I need to add some kind of code to reset the Dataset.
Here's the code in the load sub procedure:
EditBoxSearch.Focus()
' Start out clean.
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Add A Textbox With Coding?
Mar 28, 2009Ok, I don't even know if the is possible, but what I want to do is have a button that when pressed will add a new text box below each other each time it is pressed. So meaning, ther4e is text in one text box, then a button is pressed, a new textbox will appear below it and you can add text to that, and so on.
View 1 RepliesAdd Button With Coding?
May 15, 2010I was wondering if you can programme in a code to add buttons to a page, without physically putting them in.Ive got a customisable set of options, currently in a txt file 1 item per line maybe thinking of putting into a listbox, if a user adds an item i need it to add a button with that text on.
say i had a drink list, with my first 3 items of beer, cocktail, food, and theres a button prest for each one and i decided to sell wine, shandy, rout beer and so an so on, or how ever many items there are, could be 50 items or 100 items don't really fancy?
C# - Coding Standards For .NET?
Oct 25, 2010Possible Duplicate: C# Coding standard / Best practices
What VB.NET or C# coding standards are you using for your .NET applications?I was looking at hungarian notation and I don't think it is a good idea for a .NET application.
Coding For Sql Update
Aug 21, 2011I have a probelm to my quotation..
View 22 RepliesCoding With A New Object?
Jan 5, 2009I'm creating a game similar to the tradtional space invaders in VB '08. My problem is twofold. One, when I dim a new picture box (picPrimaryLaser) it won't move. Two, I can't do anything while it's moving. The screen just turns white and flashy around that area.Here's the code.
Public Class frmMainInvasion
Dim activationCheck As Boolean = False
Private Sub frmMainInvasion_FormClosing(ByVal sender As Object, ByVal e As
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Database Coding In VB?
May 3, 2010Could someone be able to advise what does the following code do i.e what does this mean in English:
ATableAdapter.Fill(Me.HotelBookingDataSet.FreeRoom, roomDateTimePicker.Value.Date.AddHours(timeNumericUpDown.Value))
Email By Coding On .NET?
Apr 28, 2009<Visual Studio 2005. VB.NET.> Does anyone has a sample code to send an e-mail like below?
Namespace My
Partial Friend Class MyApplication
Private Sub MyApplication_NetworkAvailabilityChanged(ByVal sender As Object, ByVal e As Microsoft.VisualBasic.Devices.NetworkAvailableEventArgs) Handles Me.NetworkAvailabilityChanged
MsgBox("Network Connection has been changed", MsgBoxStyle.Information, "Network Connectivity")
"Send an error email to admin"
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Get Rid Of Html Coding?
Nov 26, 2009I'm currently extracting strings from the page source of a certain website. I'm using the start string and the length to get the string I want. However, the problem is that it contains some html codes such as href, a, li etc. Is there a way in which I can copy the text only and not the code?
View 22 RepliesHow To Improve My Coding
May 28, 2011Whenever i work on form, so i use this code
CODE:
Now i have 2 things to ask?
1) is this right way which i use?
2) I use the same on every form regardless on number of forms? is it fine to use it on every form?
Reboot PC From Coding
May 10, 2012how to reboot the PC from coding with VB.Net framework 2.0 or above.i also like to set timer for rebooting process.does VB.net framework support for above process? do i need to add library or DLL file
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