I have a XSD file and I must create an XML file with data,I read schema but dataset doesnt have any table(I debug code ),how do I get XSD file into dataset,I use this code :
vb.code
Dim wds As New DataSet
wds.ReadXmlSchema("C:myXMLschema.xsd")
Basically this will be all I need to survive this flatform.
Public Function NoWork(DateDue As Date) As Boolean
Dim strSQL As String, rsHoliday As Recordset
Dim dHoliday As Date, nDay As Long, x As Date
Dim DDate As Date, dNewDue As Date, dOrigDueDate As Date
[code]....
I am using reportview to set up my report pages. I used the existing datasets(configure -->add table -->save) but every time I clicked save, I got a few errors. So I decided to create new datasets for the tables that I want to have reports. Is that the right thing to do?
View 1 RepliesI'm getting this error 'column' argument cannot be null. Parameter name: column at the bold character instruction. Also I would like to know how to relate two tables with two key columns in each table
I'm getting this error 'column' argument cannot be null. Parameter name: column at the bold character instruction. Also I would like to know how to relate two tables with two key columns in each table
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I create the form, click on 'Add New Data Source', etc, and am fine till I select the database object and hit 'Finish'. At this point i get the error: "An error occurred while creating the new data source: Could not get type information for ... " and my dataset names.
View 1 RepliesI have a function class in which I have created a function that connects to an Access database and runs a query and returns a dataset.
View 3 RepliesI have connected my sql db with vb and I m trying to make a UI. My question is that when I write code in order to create datatables and I fill them with the results of queries I've created, where do these datatables belong? I'm wondering if I have to define a new dataset or do they belong to the existed dataset which is created by the dataset configuration wizard??
View 3 RepliesThis is resultant Xml File
<Drug_x0020_Type>Marijuana</Drug_x0020_Type>
<Marij_x0020_Type>Test1</Marij_x0020_Type>
<Test1_x0020_Type>Type1</Test1_x0020_Type> <Time_x0020__x002F__x0020_Date_x0020_Recv_x0027_d>11:30</Time_x0020__x002F__x0020_Date_x0020_Recv_x0027_d>
In Database these element are as follows Drug Type,Marij Type, Test1 Type,Time / Recv'd
When i write out the dataset to xml using the GetXml method of the dataset.
Its Created But some extra values are added in element tag.
Its addeding due to special characters like {' / ....etc}
How do i get the resulting xml without those values?
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:
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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.
I am creating a form that creates new users and then updates them to a dataset, I have done this ok, but I am getting a runtime error when I delete a record. Please see below the exception being thrown
"Update requires a valid DeleteCommand when passed DataRow collection with deleted rows"
My code below
CODE:
So I know I need to add a delete command, but how do I write this in code and do I write it in the saveitem click event? I guess I would because the app crashes when I click save to update the dataset.
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?
View 2 RepliesI 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 RepliesI 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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I got this code to get the highest value from a dataset, but it now doesn't work properly. I think it only gives me the last row but not the highest value.
Dim adMaxRec As New SqlDataAdapter("select serviceid from service", nwindconn) 'where custid = '" & cutidtext & "'
Dim dsMaxRec As New DataSet
adMaxRec.Fill(dsMaxRec)
Dim maximumrecord As String
maximumrecord = dsMaxRec.Tables(0).Compute("Max(serviceid)", "")
im addin a new row into a dataset Ipsauto from the MDB IPS
heres the code im using
vb.net
Dim cn As OleDbConnection
Dim cmd As OleDbCommand
Dim dr As OleDbDataReader
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ignore the "addthis.Rows(0).Cells(16).Value" theyre values im using to insert to the tablle...i dont wanna use texboxes so im using a datagrid...and no i cant use the database bound to the one i want in a grid to add rows (got my reasons)...thats why i want to do it separetly...
how to get the maximum value record on my dataset. I found this code (maximumRecord = myDataset.compute("Max(columnName)", "")) on google but this is not working with a dataset, it is suppose to work on a table, but I need to get the maximum value of a specific data that I put into a dataset.
View 4 RepliesI'm new to both SQL Server Express and VB2008 Express or any other kind of language for that matter..I'm trying to create a form using a typed dataset created using the Data Source Configuration Wizard that contains two main tables and a third that creates a many to many relationship between the first two.Is this possible as when I examine the dataset in the Data Sources window, the middle table shows up as a related table under each of the main tables but neither shows a third related table.How can I show synced data from all three tables on my form. Is this possible using the Configuration Wizard or does it have to be done in code?
View 2 RepliesI'm trying to create a form using a typed dataset created using the Data Source Configuration Wizard that contains two main tables and a third that creates a many to many relationship between the first two.
Is this possible as when I examine the dataset in the Data Sources window, the middle table shows up as a related table under each of the main tables but neither shows a third related table.How can I show synced data from all three tables on my form. Is this possible using the Configuration Wizard or does it have to be done in code?
I have a client database, with a form which shows a full list of all my clients in a DataGridView. The Load Event of the form fills the dataset - which works fine.
Under the DataGridView I have a link to 'add a new client' which opens a new form and prompts the user for the new client's details. On clicking Save, it excecutes a SQL stored procedure to insert the new client directly into the SQL database. This also works fine.
On closing the 'Add new client' form, it returns to the form with the DataGrid (which was always visible). However, the DataGridView (populated from my DataSet) doesn't show the newly added client.
frmAccounts.TblClientsTableAdapter.ClearBeforeFill = True
frmAccounts.TblClientsTableAdapter.Fill(frmAccounts.DsClients.tblClients)
frmAccounts.TblClientsBindingSource1.Filter = "ActiveClient = 'True'"
frmAccounts.TblClientsBindingSource1.Sort = "Surname"
I made sure the call was being executed by sticking a MsgBox line in the procedure, so I know it runs - yet it doesn't update or refresh the DataSet.This is exactly the same code that is in the Form Load event, so why does it not work? If I close the main form and re-open it, it reloads the DataSet and shows the newly added record.I've also tried putting the code in other Events rather than Form Closing and still it does not work.
I have all my data in a dataset but i'm wanting to show only some of this in a datagrid. I know I can open up "Search Criteria Builder" as shown in my image but how can I add a program virisable into this for example
SELECT ID, ShortName, LongName, Manufacturer FROM Aircraft WHERE FirstFlight > CurrentGameYear
And CurrentGameYear is a Public variable in my application.
I have this application I developed whose bulk of code is designed around processing information and generating external files (most in MS Excel). Data is read from a variety of support documents (design drawings) and processed through some fairly complex algorithms. To support this processing stage there are a variety of settings saved in a DataSet saved as an xml document. At the time I thought it would be a nice "poor-man's" database and I wouldn't have to worry about a lot of overhead. Besides, there will never be more data than MS Access could handle, so Oracle and SQL Server would be a huge overkill. MS Access in itself almost is. The most records I'll probably have is a couple thousand. Unfortunately, the more records that are added, the slower it's write and read responses are getting. I'm not doing anything fancy. Literally using:
'Retrieve the Dataset and DataRelation object SettingsDS.ReadXml(FilePath, XmlReadMode.ReadSchema)and dsSettings.WriteXml(DSFilePath, XmlWriteMode.WriteSchema) The information in this xml includes the schema (data relations, table definitions, constraints, etc) and records.
i have been working on an xml heavy application and have been extracting the xml via LINQ and populating predefined Dataobjects (defined directly from classes and added to Data Sources as type Object) now using this method i have lost a lot of functionality normally achieved with a database method (ability to sort dgv using the header columns for example) I tried adding a dataset to the project and discovered that i cannot simply drag these objects to the DataSet designer. i am considering going down the route of sql CE 3.5 but this would mean rewriting a large portion of my project and tbh i'm not sure how to add LINQ to sql compact (google comes up mainly with c# examples or how to get data from sql in linq form.Currently i have 4 Objects in my Data Sources panel and i wish to give some relational abilities to these objects.
View 16 RepliesI have been stuck on this for the last 30 min, can't find out where I am going wrong. Its fully functional scrolling through records but I get an error when I try to update a record. The error is "Update requires a valid UpdateCommand when passed DataRow collection with modified rows." I include a pic of the code and error.
View 2 RepliesIs there any way to design and print reports using VB.Net Express 2008 If there is no solution, my backend is Access 2000 - so can I open & print a stored A2000 report from within VB.Net 2008 Express ? How
View 5 Repliesi 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 RepliesI 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
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]
View 1 RepliesI 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 RepliesI would like to know where the dataset designer is obtained for a vb.net 2008 appliocation I need to work on. Is this part of the initial install for visual studio.net 2008. If so, what part of the initial install will I find the dataset designer? Is this a plugin that needs to be downloaded? if so, what URL do I need to use to obtain the plugin?
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I have a dataset which creates a table adapter to the table I need. I call a query on that table adapter which returns the number of fields returned. In this case it's one field and will always be one field.. I am filling a variable with that query.. however instead of the fields returned I need the actual data.
This is how my current code sits...
vb.net
Dim aUserName As String
'TODO: This line of code loads data into the 'DataSet1.IT_Staff' table. You can move, or remove it, as needed.
aUserName = Me.IT_StaffTableAdapter.FillByUsername(Me.DataSet1.IT_Staff, SystemInformation.UserName)
Do I have to load this into a variable declared as a datatable then somehow call the column and row 0's value? If so how?