SUM Value Of A DataSet

Aug 21, 2009

The following code seems to be working properly in VB, there are no errors. The Select statement does work in SQL.

How do I capture the value of the sum(qty) for use in other calculations?
[code...]

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DataSet Editor - Allows The User To Edit A DataTable In A Strongly-typed DataSet

Mar 15, 2010

When 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?

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IDE :: Dataset Code Behind Datatable.ColumnChanging Event Firing / But Dataset.HasChanges Property Not True

Jan 28, 2010

I 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.

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System.Data.Common.DbDataAdapter.Fill(DataSet DataSet)

May 14, 2012

I 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

[Code]...

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.net - Copy Data From Dataset To A Type Dataset Using Automapper?

Aug 24, 2010

i 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?

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Fill A DataSet On Application Startup And Use Dataset Other Form?

Jun 5, 2010

I 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

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Loop Through Dataset Updating Data From Results Of Another Dataset

Jun 22, 2010

I 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]

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Saving Dataset To Database Which Has Imported Rows From Another Dataset

Jan 4, 2011

I 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.

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.net - Combine Multiple Dataset Columns To One Dataset?

May 19, 2010

I 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

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Repointing A Report Dataset To A Test Dataset

Feb 18, 2011

ok, 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...

[Code]...

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VS 2005 Typed Dataset Vs UnTyped Dataset

Nov 25, 2009

I 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

[Code]....

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 ?

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Asp.net - Geocoding A Dataset - Map A Dataset Of Addresses On A Map

Aug 2, 2011

i 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.

[Code]...

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C# - .NET Dataset Design - Have A Dataset For Each Table?

Jul 23, 2010

I 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)

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DataSet Transformation To New DataSet Group By (x)?

Dec 3, 2009

it returns date, and value by date.

for ex:
01.01.2009 454
02.01.2009 785

[code].....

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Datatype Of A Dataset - Filling A Dataset

Feb 26, 2010

I 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?

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Declaring Variables With New DataSet Vs DataSet?

Apr 16, 2010

What 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?

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Get Dataset From A Grid Which Has Already Bound To A Dataset?

Jan 11, 2012

I 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

[Code]...

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MS Access - Dataset - How To Reset A Dataset

Jun 9, 2011

I 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.

[code].....

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Filtering Dataset - Dataset (WW1Dataset) With One Data Table(WW1) (database Used In An Access Database)

Feb 1, 2010

I have a dataset (WW1Dataset) with one data table(WW1).(database used in an access database) I'm trying to filter the dataset e.g a user wants to filter by a chosen surname (SurnameTextBox.text) so the datset is filtered to display only those records wherethe surname column in the dataset matches SurnameTextBox.text.

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Create A Single Dataset In Studio To Database / Create A Dataset For Each Form

Jun 28, 2009

I created a SQL database using the migration tool.I am converting my access forms to VB.net (VS2008).I am wondering if I create a single dataset in studio to the database or do I create a dataset for each form (query)? I am trying to determine what the best solution is. Many of my forms have drop downs that are populated using queries from tables.

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Sql Server - Updating SqlClient Dataset Table With OracleClient Dataset Table?

May 5, 2012

I use a dbDataAdapter to populate a DataTable from an unlinked oracle database.I have a dbDataAdapter that I want to insert rows into an SQL Server table using SQLCommandBuilder.I have been trying all day to update the DataTable that references the SQL Server table with the data from the Oracle DataTable so that I can insert the rows.

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Destroy Dataset - Use Only Use One Dataset Instead Of Five?

Aug 4, 2010

I created a function (MakeDST(byval SQLstring as string)) to return a dataset. In my app, I need about 5 datasets.

[Code]...

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Send Row From Dataset To Dataset?

Sep 4, 2009

If i have 2 Dataset : Dataset1,Dataset2 Dataset1 have 10.000 Record

if i want to send Data in Dataset1 at Row 300-400 to Dataset2

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Change Typed Dataset To Shared Typed Dataset?

Aug 9, 2009

I create one typed dataset by dataset designer in VS2008. How can I change this dataset to shared typed dataset?

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Does VB Allow A MS Access Database DataSet Create A Stored Procedure Or Will It Only Allow SQL Database DataSet Create SP

Oct 9, 2009

does VBasic allow a MS Access Database DataSet create a Stored Procedure or will it only allow SQL Database DataSet create SP...

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Add New Row To Dataset?

May 22, 2009

I have a dataset: dtswith 3 tables: aparatos, sat, clienteAparatos.

I want to add row but it displays conversion error:

Quote:

System.InvalidCastException.

Example:

For Each ROW As DataRow In dts.aparatos.Rows
dTable = gClBD.functionReturnTable(myConnection, "select field1,field2,field3 form table where id=" & row("id")))

[Code]...

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Cant Add New Row To Dataset

Feb 25, 2009

I have a form of which I want to use to create a new row:[code]I have a combobox on a form linked to Folders Table, with a Gridview lined to Files Table (So sepending on which Folder you select in ComboBox the relevant files appear) this all works fine.The problem is when I open my other form to create new row in (Files Table) (the FolderID from the table Folders) doesnt appear in the FolderID TextBox on my new form, event if I type it in it doesn't work, code to save:[code]How can I get the correct FolderID into my form and be able to save it

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Get Value From Dataset?

Mar 27, 2012

How to get value from dataset, i m using code as below to get the value but failed.[code]...

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How To Get A Dataset Value

Feb 16, 2010

How to insert or select the dataset value.

cmd = New SqlCommand("Select * from table1", con)
ada = New SqlDataAdapter(cmd)
ds = New DataSet

[code].....

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When Should Use A Dataset

Mar 11, 2010

Oddly I have never ever found the need to use a dataset. I very often use datatables as disconnected recordsets or for use when binding grids and the like. However I am having trouble understanding what the useful purpose of incorporating my datatables into a larger set. If someone would like to share a practicle example, that would be super

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