I have the following function: Public Shared Function GetLookupTableData(ByVal TableName As String, ByVal WhereClause As String) As DataTable
[Code]...
With one xml file it loads the schema and data just fine, but with another xml file it only loads the schema and not the data. There's no error thrown - just no data loaded.
Anybody have any ideas? I've attached the .xml file for your review. I would have attached the .xsd but the system wouldn't allow it.
I am creating XML files and load them back again. I use this following code to write xml to a folder. the code below will put date and time to the file name. and this code works fine.[code]...
Again, I want to load the last xml file back and put in a dataset. I normally write code like [url]...
so what I want to do should be pretty simple. I've been following the examples found here Using the BackgroundWorker Component - VBForums . I've been successful, but I'm not smart enough to put it in my project.
What I'd like to happen is this
1. I hit a button to load data from a dataset....
2. have a progress bar show until this action is complete.
The main problem is that I can't figure out how to tie the "progress bar" to the action of "pulling the dataset"
I'm sure this is a crazy question for you all, but hey...
Would I put all of the coding in the button_Click sub?
I have a comma delimited text file. I need to write this file to xml. I was thinking of first loading a dataset from the text document and then working from there. Is this a good way to go about it?Also how would I load the dataset from a comma delimited text file. The text is enclosed in quotation marks which I want to be removed
I want to load an xls file to dataset, edit the data, and import them in mysql.My problem is that I can't load the file. It seems like it ignores the file completely.
Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles cmd1.Click Dim MyConn As OleDbConnection Dim myPath As String = "C:TempManinLottery2009.xls"
I've only dealt with firing a single SQL statement at a SQLServer table and returning a single result... easy....
however....
is there a way to fire a dual sql command and load the results into respective tables within a dataset?.. I'm thinking something along these lines (this code of course does not work)
Dim ds As New DataSet Dim dt1 As DataTable = ds.Tables(0) Dim dt2 As DataTable = ds.Tables(1)
I dont know how to dynamically populate a dataset based off the tables in an existing database.Once I can get the dataset to populate, I can then move forward with the next step of the project.
In the below code, it is supposed to load the data from the dataset, into the table, so that I can view and navigate the records.My problem is, that when the statement runs, it errors with:
System.Data.ConstraintException was unhandled "Failed to enable constraints. One or more rows contain values violating non-null, unique, or foreign-key constraints."
I'm still in my novice stages of .net development, and I think I may be trying to make something too complicated.In VB.Net 2008, I'm using a SQLDataAdapter to Fill a dataset with records being returned from a Stored Procedure (SQL Server 2005).I'm using that dataset as the datasource for a gridview. Up to this point, everything is great and I understand what's happening.I'm getting ready to make my first-ever attempt at updating the data in thegridview and then pushing the updates back to the SQL dB.Here's where I'mgettingconfused...to cut to the chase, what's the simplest way to load the updates back into SQLServer?
Imports System.Data Imports System.Data.OleDb Public Class Form1 Dim con As OleDbConnection Dim cmd As OleDbCommand
[CODE]...............
The insertion part of the form works great. But my problem is in the form load part......If i leave a field blank(Null),then perform Save operation,close the form after successful insertion and then reopen the form,then it retains the previous values during the form load......This is only in case where i leave a field blank in the previous data entry in the database.......But if i enter values in all fields then form load is working great.
I've got a requirement to create report datasets by taking a list of tables, columns from those tables, filters on the tables, and relations between the tables - and build a dataset from them. All this information is contained in an xml file. So I:Read the data from the tables in the list into the dataset. Apply any filter criteria on the tables to the default views. Add any relations between the tables to the dataset relations. So far, so good, but now comes the hard part. One of the requirements is to create a default view (or table) of columns at the dataset level - with the appropriate constraints and filters applied. So there would be this default table or view that would have, for example, columns 1 & 2 from table1, columns 4 & 7 from table2, and column 5 from table3. This is where I'm stuck, because there doesn't seem to be a 'view' property or function at the dataset level.
I am attemting to read a .txt file database into an xml file and then read the xml file into a DataSet and then bind the dataset to bindingSources and then subsequently bind comboboxes and text boxes to the binding source. I am struggling with how to create bindingsources with different filters. I am not sure if I am even going about this the right way. Perhaps there is a better way. I already have the program working using traditional OLEDB and creating different datatables but I wanted to be able to add and edit my datafile so I decided to convert it to a xml file.
HTML If Me.OpenFileDialog2.ShowDialog() = Windows.Forms.DialogResult.OK Then With OpenFileDialog2 folderName = .FileName.Substring(0, .FileName.LastIndexOf("")) 'fill dataset with selected xml table [Code] .....
I am using xml reader to read an xml file into a dataset and and then create some dataviews and bindingsources for binding combo and text boxes as such:
Dim folderName As String Dim xmlFile As XmlReader Dim ds As New DataSet()
[code]....
I don't know how to do the same thing I am trying something like:
i have a form which accepts inputs from the user. I want to create a crystal report ( not from the database but from the form ) and to create a crystal report, i need to create a dataset. i dont know how to create dataset from the form's input
I'm having a little trouble figuring how to do this.I have a dataset with a single table. Each row has the following fields ProductName, Version, CompanyName
The data might look like this
Visual Studio, 2005, Microsoft Visual Studio, 2008, Microsoft Office, 2007, Microsoft
I have already populated the TreeView with a list of Company names from a separate table. Now, what I want to do is to loop through my dataset adding a single node for each product under the appropriate manufacturer. Then under each product adding a separate node for each version of that product.
I create one column which is tinyint then I go to VS2008 and create typed dataset by wizard. Then I check that column's datatype it is now byte datatype. MS SQL 2005 tinyint = VS2008 byte ?
I'm a bigginer in Visual Studio. I have created the forms using Visual Studio Professional 2005 and a database using Microsoft SQL Server 2005. I have some combo boxes in the forms and want to populate them using the dataset which I have attached to the VB.net project. I used the following method.. but when I run the project, the combo box is still empty..
I was wondering if the following is possible. In a particular operation I want to create a dataset, bulk copy it to another SQL Server, then update a flag column in the copied rows.I'll have a system that will be regularly inserting new rows of data, then at regular intervals want to copy that data to another SQL Server. Once the rows have copied I need to change a flag column so that they won't get copied again.Whilst this is going on there is a strong possibility new rows of data will be being inserted into the source table. These new rows will be copied at another interval.
