Section And Title Are Columns In A Dataset Defined By DtName That Exists
Aug 13, 2009
I am having very odd behaviour from my compiler when i run my program, i have two practically identical snippets of code that are doing pretty much the same thing: both are populating nodes on a treeview using information from the treenode above but when the program runs one of the snippets tells me at runtime that something i have defined is nothing. [code] section and title are columns in a dataset defined by dtName that exists, and the where bit is refering to a column where the entries match the value assigned to volume. which is 1 in the first iteration.
View 2 Replies
ADVERTISEMENT
Feb 4, 2012
It looks to me like a reference error yet all Crystal reference are included. I have set up a test program and this work fine. Yet when I run this in my main program I get this error. This is trying to run a Crystal Report. I know this is Crystal but I don't think it is an error or issue with Crystal I think it is more related to the the set up of the program.
[Code]...
View 2 Replies
May 28, 2009
I am having trouble with this code. Can someone tell me why the "Project Processing' section doesn't run at all? The 'Client Processing' section runs and executes find but it seems the 'Project Processing' section does not.
Code:
Public Sub btnExecute_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnExecute.Click Dim mBaseFolder As String Dim mProjectFolder As String Dim mClientName As String Dim sClientFolder As String Dim sProjectFolder As String
[CODE]...
View 3 Replies
Jul 30, 2009
I have a form that i am using for my ticket software where i am wanting to take the section combo box an have it only display the sections out of my dataset. here is something like i am wanting to do. this is my data table
Section Row No. Seat No.
A A 2
A A 4
A A 6
Then it go to
A B 2
A B 4
I want to have a combo box for each one Section, Row#, Seat# and when I drop down the box for section it will just give me the section and then when I go to the Row# box and drop it down it will give me just the rows in that section and then in the seat box it just gives me the seats in that row.
View 3 Replies
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
View 1 Replies
Feb 11, 2012
What I want to do is to add a new student loan and the program checks the book title if loan exists, does not allow the same loan to be created. There is no limit on the number of loan placed by the student. How do I write the code as above in VB.NET Note: 1 book Per Loan number Add Loan Form
View 1 Replies
Jan 16, 2012
I declar a dataset in my setting i Write the code below:
GlobalDataSet = My.Settings.GlobalDataSet
GlobalDataSet.Tables.Contains(TableName)
But problem is when load my application first time My.Settings.GlobalDataSet is null. a error rise in secound line is NullReferenceException. i try to write below:
If
My.Settings.GlobalDataSet =
""
Then
GlobalDataSet = My.Settings.GlobalDataSet[code]....
but it say sindex error. is there any code for check My.Settings.GlobalDataSet is null or not null.
View 4 Replies
Nov 20, 2009
At the moment when a user logs into my system it checks to see if a job exists, if so the records are put into a datagridview. However, if there are no jobs in the database I get an error.
[Code]...
View 1 Replies
Nov 10, 2010
I am trying to write a module that will select cells from multiple, non-contiguous columns within a row that is defined by a variable. The column numbers are known and are unchanging. For example, my worksheet might look like this:
A B C D
Row 1 X X X X
I want to select cells A1, B1, and D1; however, I don't want to use the row number (1 in this case) in my code. Rather, I want the row number to be specified as a variable. The code I am writing is inside a For/Next loop, so I would like to use the iterative variable (i in this case) to define the row number. That way, every iteration of the For loop will select cells from a different row.
View 1 Replies
Dec 8, 2009
I am a newbee at this but I have a general question about datasets.Most of the help I have read and the videos that I have watched when a dataset is created it is created for a given table.Take the northwinds database.When a dataset is created in vb2008 in the video it creates a dataset for the Customer table and a seperarte dataset for the Orders table and a serperate dataset for the OrderHdr/OrderDtl.Is it better to do it this way or is it better to create one dataset named NorthDataSet and have all of the tables defined in it?What are the pros and cons to doing it both ways.Is there something I can read to help me decide which way to go?I have a large project that is being changed from VB6 and ACCESS to VB2008 and Sql Server.The database has around 300 tables in it.
View 1 Replies
Dec 9, 2010
I've create a new VS 2008 Window Form Project using VB. I added an oleDbDataAdapter to the first and only form, set it to a table in my Access 2007 Database (there is only one table, PK field autonum of course and two Memo fields). The Database is in the Project's folder. A standard oleDb Connection object was created, as I expected, then I select the DataAdapter and choose 'Generate Dataset' which produces a standard DataSet called 'DataSet1.xsd'. Now when I build the project I get an error 'Error 1 Type 'FontTest.DataSet1' is not defined.' I do have a reference in my new Project to System.Data.So what the @#%$@ is going on? Why isn't the Dataset create by the DataAdapter being recongized? I can get into the DataSet Designer. The DataTable create is perfect, three columns defined correctly as I expected.
View 2 Replies
Feb 1, 2010
I am using Visual studio 2008 trial edition and SQL server to make a VB.NET app. I have a windows form which i use to add information to a database, by using a dataset. I recently increased the precision of a column using SQL server manager. I went from numeric(8, 4) to numeric(10, 6). I have my datatable's column set to system.decimal with a maxlength of -1. The problem is when i try and add a row using my program, the column now truncates the values as if it was still set to numeric(8, 4). I have checked my controls to make sure they are not truncating. I am currently creating a row and filling it with values and then adding it to the dataset and then updating the dataset. When i look at the locals during run time the row has the correct truncated value before and after i add it to the dataset but the truncated value is getting added to the database. I have tried manual entering data that is to large for the numeric(8, 4) and the database excepts it. It seem like the dataset does not realize the database has changed.
View 4 Replies
Aug 19, 2011
how can I get the array of column names from a datagrid. The datagridview is bound to a dataset that contains a datatable.
Example: Columns [A B C D E F G] then you would check the array and see if any values match those
View 2 Replies
Sep 22, 2009
in my VB.Net application I've created a Dataset that call an existing MS SQL Server stored procedure but after the wizard close no columns where added... how can I add all the columns returned by the stored procedure without adding them manually (off course the stored procedure might change in the future) in which case manually will not work.
View 1 Replies
Jan 14, 2010
I am running queries using sqlcommand and am trying to get the results from sqldatareader into a dataset table. It works fine when loading the datareader data as a row into the dataset table and writes it to a crystal report.I would like to have depending on the query results have the data in the appropriate columns and it only happens if the results are from all fields.
Dim CommandObj2 As New SqlCommand(sql, cnn)
sqldr = CommandObj2.ExecuteReader()
While sqldr.Read()
Dim dataRow As DataRow = ds.Tables("NTable").NewRow()
[code]....
MsgBox(ds.NTable.Rows.Count, MsgBoxStyle.OkOnly, "Records Count")My dataset and table have the same name, NTable. Question again is how to populate the dataset columns accordingly.
View 5 Replies
Mar 8, 2011
I'm using vb.net / winforms.How can I convert 10 lines with three columns into a DataSet/DataTable?
View 1 Replies
Jun 5, 2011
what i need to do is to get some data from sqlserver and send it to a dataset(no problem there) after i get the dataset filled i need to send the columns and rows to a textfile but i have to separate the columns on the dataset with this "|"
View 2 Replies
Jul 29, 2009
I add columns to my dataset but when start my application again columns are not there
[Code]...
View 4 Replies
Sep 29, 2009
I am using dataset in my project.After filling all the tables in dataset,i want to perform join queries on tables.i dont know how to do that...Also i want to fetch few columns in a gridview from dataset table.I can't use ds.tables("student").select(name,roll)....
View 1 Replies
Aug 12, 2011
Following is the code which gets xml data from web service and then dataset reads using ReadXml method. This Xml has ID and MyDate tags for each table row (so table(0) will have ID and MyDate columns) and this Xml data does not have schema associated with it. When page is loaded first time, it sorts by ID in asc order. It was working until ID was 999. When next ID came as 1000, even in ID asc, 1000 is showing before 999 in datagrid.
I wanted to confirm that when dataset is loaded using ReadXml, all the columns in its table are treated as string even they are numbers or dates and that's why in ID asc order 1000 is coming before 999.
Also, MyDate tag has date in format "01/31/2011" (mm/dd/yyyy) and it seems that sorting is wroking fine for date. Would sorting by date always work even when dataset table MyDate column is of type string (assuming that my above statement is correct)? Are my two above assumptions correct?
stream = New System.IO.StringReader(XML data returned from web service)
With dataset
.ReadXml(stream)
dvView = .Tables(0).DefaultView
[code]...
View 1 Replies
Oct 5, 2011
Dataset's ReadXML() method would read an XML document. But how would we skip certain columns? [Code] So, if I use ReadXML(), it would read the whole document and the dataTable would have "id" column, "name" column and "price" column. But I want to have only "id" and "name" column. How can I skip certain columns from reading it?
View 3 Replies
Sep 3, 2010
My form holds a group of textbox's that get data from a dataset, it also has a navigator on it to nav the records.I'm trying to have the "title" or text of the form itself change with the contents of the dataset, I can make it change using the nav button events, but I have to put code into every single event (bindingnavigatorMoveFirst_click, movenext.... etc) and the title does not show when the form first loads that way.
Dim xName As String = ComboBox5.SelectedValue
Dim xCase As String = CaseNumberTextBox.Text
Me.Text = "Case " & xCase & " worked by " & xName
View 4 Replies
Apr 29, 2011
For a WinForms VB.Net application, I use the Bindingsource's filtering capacity to filter data, which is seen in a DataGridview. The BindingSource is from a DataSet, created using the Designer, and the data comes from a Access DB, using JetEngine and .Net 3.5. So basically:
Datagridview.Datasource = xxBindingSource
xxBindingsource.Filter = "[extended filter string with multiple columns]"
This filtering works fine, however, now I included some extra columns in the DataGridView, which I'd like to filter on, too. Of course, when I feed the manually added columns to the Filter of the BindingSource, this doesn't work out.I've done some research, and was not able to find any way to use the BindingSource's filtering syntax on the DataGridview. I'd like to use this syntax though, as I designed quite a nice UserControl and class around it, to provide smooth, fast and simple filtering capabilities.
View 1 Replies
Nov 15, 2010
Q:how can i add columns dynamically to rdlc report from dataset in windows based.
View 1 Replies
Jan 17, 2012
I am using a Strongly Typed Dataset as DAL. I want to return a single column from my table for that i wrote the code as
SELECT DISTINCT Floor
FROM Room
WHERE (Building = @Building)
But when i previewed the data, it shows me all the columns of the table with Null Value and the column with primary key has -1 value. This condition raise an Exception when i link this query to a ComboBox ..
cmbFloor.DataSource = da.GetFloorByBuilding(cmbBuilding.Text)
cmbFloor.DisplayMember = "Floor"
Error: Failed to enable constraints. One or more rows contain values violating non-null, unique, or foreign-key constraints.
View 1 Replies
Jul 5, 2011
How can i do a workaround for this? I two databases(.sdf). Database A has table A1 Database B has table A2 Table A1 is an exact duplicate of A2 minus 3 columns My dataset(.xsd) is based off of tableA2 in Database B. I can fill all my tableadapters in Database A and all info in table A1 using the dataset. My problem lies when I do TableAdapter.Update() for Table A1(Since the dataset has the 3 missing fields) it tries to update table A1 with info that isn't there and I get an error. How can I update table A1 and ignore the 3 missing columns using the single dataset? Or is TableAdapter.Update() designed to Update the Database with all columns found in the dataset ?
View 1 Replies
Nov 3, 2009
I have a class that contains one function: "ShowDialog()" It creates a new openfiledialog and sets its title, but when it is run, the title of the openfiledialog is set to the current directory that is shown in the dialog. I would not like this behavior. Here is the code:
Public Class LoadSet
Public Shared Function ShowDialog() As System.Windows.Forms.DialogResult
Dim Dialog As New System.Windows.Forms.OpenFileDialog
Dialog.DefaultExt = ".bsfci"
[code]....
View 4 Replies
Dec 19, 2010
Im am trying to get whats inside the <title>My Data</title> tags, however the results i pull back are not whats in the title tags..
Dim myMatch As Match = System.Text.RegularExpressions.Regex.Match(My_Text, "<(?<title>w*)>(?<text>.*)</k<title>>")
If myMatch.Success Then
[Code]....
View 3 Replies
May 2, 2012
I am creating a custom config section that will allow me to manage what ELMAH exceptions I want to ignore from my VB.NET/ASP.NET app. Here's my code. I made it easy to paste in a blank code file if anyone's up to the challenge of diagnosing the problem.
CODE:
When I execute this code:
CODE:
I get the error An error occurred creating the configuration section handler for IgnoredExceptionSection: Could not load file or assembly 'WEB' or one of its dependencies..
What boggles my mind is that this all works fine in my C# console test app after I convert the code from VB.NET using a web utility. However, when I paste the VB code from my web app into my VB.NET console test app, it doesn't work there, either, so it appears to be a C#/VB issue. What am I doing wrong here?
View 1 Replies
Mar 4, 2009
Does anyone know of a solution using the internal webbrowser, to grab a sites <title></title> tags?
As for now I have in my browser something like:
Me.Text = WebBrowser1.Url.ToString
Hence showing the URL in the forms text, but I would need to change that to a sites title
View 3 Replies
