Setup Databinding To Display The Linked Data Loaded From SQL?
Jan 11, 2012
I'm trying to setup some way to reload values once the uniqueID is selected from a combobox. once the this is selected, it has to loadup the values of the other comboboxs with the saved Choose. I've got the the point of the values are Inserted into the database and save the inital chooses.
But now i got to the point to re load the information from that ID i not sure how to go about it, I tryed using Databindings It loaded the data under a query to filter the Data to the correct Values but it ovisuly removed the Pre determinded values that are set in the combobox.
[Code]...
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Dec 7, 2010
I have a data set with a parent child relationship between a patient table and an insurance table. There can be up to 4 insurances for each patient. I want to display them in 4 separate panels of a vb.net form. So if a patient had 2 insurances, then txtName1.text on panel 1 would have the company name of the first insurance, txtName2.text on panel 2 would hold the company name of the second insurance, and so on.
How do I display only the insurances related to the current patient? I've tried moving through the rows of the related table, but that gives me all the rows, not the ones I need. Everything I see on the internet suggest using a datagrid, but that's not an option in this case.
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Apr 27, 2010
I have a datagridview linked to a dataTable loaded from a sql server via an adapter.I wish to sort one of the column: Filenumber.The Columns is a string. For example:
M-099
M-756
M-777
M-1000
But when i sort the columns by using Me.DataGrid.Sort(DataGrid.Columns(9), System.ComponentModel.ListSortDirection.Ascending), it turns out to be:
M-099
M-1000
M-756
M-777
I would like to know how to sort it like:
M-099
M-756
M-777
M-1000
How should i go about it? I've thought of getting rid of the M- in front and putting it into another column, but it makes filtering nuisance.Also, is it true the a custom sort via an IComparer is only applicable to things without a binding source?
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Apr 30, 2009
how to insert and update data into cache database which is setup as a linked server on sql server 2005.I mean to say insert / update query statement.
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Jun 18, 2009
When I try adding a new data source to my project I get a prompt saying "The connection you selected uses a local data file that is not part of the current project. Would you like to copy the file to your project and modify the connection?"This sounds rather obscure to me, as I'm new to VB.NET and programming non-script apps in general. The data source in this case is a .sdf SQL CE file.
Question 1: If I say that I want to copy the database to the project, what will happen after I compile the app, where the database will be? (how will I edit it from another app?)
Question 2: If I do not include it, how the data source will still keep linked? Can I link using filesystem enviroiment variables like %ProgramFiles%MyAppDir?
Question 3: Can I just tell it to use a read-only (Just needs to read it) data source on the web, like on an FTP?
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Apr 9, 2010
I have three tables in SQL server which I would like to show and access on a form. Table 1 contains account data, address, contact details etc. Table two contains data attached to a Person, tel no , Mobile no, Email etc. Table three contains details on what awards the person holds, i.e. one person can hold several awards.
Therefore I have a one many relationship between the first two tables and a one many relationship between the second two tables. This is set up in SQL
The first two tables are shown on a form, table 1 via a set of text boxes, table 2 via a datagrid control.
I would like the functionality whereby I could select a row in the datagrid showing the persons name and find the Persons_ID number then use that as a filter to a second datagrid view so that only the selected persons awards show in the datagrid.
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Jul 27, 2009
I have two data tables within my data set that are loaded onto my form on form_load using statements written in code (not the designer. When I change a value for the first table via a text box the change is made to the data set. But when I try the same for the second table, the change doesn't remain in the data set when I switch to a different company and come back. I query the second table using the primary key of the first table but no code is needed when I change the values for the first table so I don't understand why the same doesn't work for the second when I change a value via a data-bound text box....
Here is my code that initially binds the data:
'This is used to read our data from the data base
Public Sub Read_Data_SQL()
Call Clear_Bindings()
[CODE]...
Here is the code I call when the selected index of my company combo box changes to have the second table reflect that of the first:
'This sub populates any information contained in the Contact2 table
Private Sub Update_Contact_2()
Dim Company As String = cmbCompany.Text.Replace("'", "''")
[CODE]...
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Aug 23, 2010
I have a datagridview and some textboxes and other controls all bound to a bindingsource. When I first run the project the controls all show the correct data (the first row in the datasource) but when I change rows in the datagrid my controls do not update their data.
My code:
Private Sub BindData()
Try
bs = New BindingSource
bs.DataSource = dtPromoList
dgvPromo.DataSource = bs
[Code] .....
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Oct 27, 2011
Im using datagridview in asp.net.When im trying to add row using footer template in find error coming up.I have corrected syntax and column is in Database.
<ItemTemplate>
<asp:Label ID="lblMembershipName" runat="server" width ="150px" **Text='<%# Eval("MembershipName")%>' >** </asp:Label> </ItemTemplate> <EditItemTemplate>
[Code].....
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May 25, 2009
Im using datagridview in asp.net.When im trying to add row using footer template in find error coming up.I have corrected syntax and column is in Database.
<ItemTemplate>
<asp:Label ID="lblMembershipName" runat="server" width ="150px" **Text='<%# Eval("MembershipName")%>' >** </asp:Label> </ItemTemplate> <EditItemTemplate>
[code].....
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Jan 11, 2010
VB 2008 .NET 3.5. I have a custom "Shipment" object that contains a list of "ShippingRate" objects. This list of "ShippingRates" is accessible through a property "Shipment.PossibleShippingRates." That property simply returns a copy of the list of "ShippingRate" for that particular Shipment.
My UI layer receives a list of "Shipment" objects from the BLL. This list is databound to a datagridview, and shows details relevant to the Shipment such as Shipping Address, etc.
I want to bind the "Shipment.PossibleShippingRates" property to a combobox, such that when the user changes the grid row, the combobox reflects the "PossibleShippingRates" for that "Shipment."
In addition, I need a way to store the "ShippingRate" they selected from the combobox for later use.
I have tried a few ideas, but none of them work properly.
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Oct 17, 2011
I'm working on a program that is interacting with a simple Access database. When the form loads there need to be multiple text boxes that are bound to the same table and field in the database, Inventory_Table.Quantity, to display the quantity of the inventory. From there, orders are read into the system adjusting the inventory as necessary.
I need to specify what row these are each supposed to be bound to, because right now it is binding them all to row 0, which makes sense but is not what I want. Is this possible? Heres the code I have to bind currently.
txtTopQuantity.DataBindings.Add(New Binding("Text", myDS, "Inventory_Table.QUANTITY"))
txtLegQuantity.DataBindings.Add(New Binding("Text", myDS, "Inventory_Table.QUANTITY"))
txtFastenerQuantity.DataBindings.Add(New Binding("Text", myDS, "Inventory_Table.QUANTITY"))
txtShortQuantity.DataBindings.Add(New Binding("Text", myDS, "Inventory_Table.QUANTITY"))
txtLongQuantity.DataBindings.Add(New Binding("Text", myDS, "Inventory_Table.QUANTITY"))
txtWheelQuantity.DataBindings.Add(New Binding("Text", myDS, "Inventory_Table.QUANTITY"))
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Aug 7, 2009
Setup and deploy for my project worked fine for a while allowing you to install my program and uninstall the old version, but now it installs two entries. I don't get it, before I got it do do that it would give an error that it needed to be uninstalled first. Now like I said I get two entries in the programs uninstall window. RemovePreviousVersions = true. I change the version number and update the product code. Even tried changing the upgrade code. I just don't get why it doesn't work anymore, and its really annoying! Also, is there a way that the setup file can just be one .exe rather then a setup file and a data file?
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Mar 10, 2009
I am designing a form that will create a template of data that will later be loaded into another form.From a menu command "Create New Template" I will need to ask how many Fields will be needed for the new template in an input box. If the user would input say 10, then I need to generate 10 labels, 10 text boxes, & 10 combo boxes. Each group (label, Text Box & Combo Box) on its own row on the form.I also want create the data mapping for each of them at this time.Once I have achieved this then I will add a form that will lookup the template name, and row count given from the above form via the database and load the required rows of items for further data entry.
Since I will have a MAX row limit I thought about designing a form using a Table Layout panel with 25 Rows and 5 columns then doing some sort of .visible true/false for the layout panel row after the user input of row/field quantities.Another question is resizing the form around only the visible rows.
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Aug 8, 2011
I created a VS2010 application that stores data in xml files with a custom extension (e.g. ".ABC") I would like to be able to open an .ABC file and have the application launch with the specific file's data loaded. This is analogous to opening a Word doc and having Word open with the doc loaded. I have searched for a while but can't even think of a phrase that explains this process. Nothing seems to match "You know . . . that thing that happens when you double click on a data file".
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Mar 19, 2009
i have a textbox that i want to format the value and i placed it in the Validated event.. it works ok when a user enters a value but when data is being loaded from database, it doesn't format.
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Apr 4, 2011
I've a xml file to load into the datatable, but no data is loaded, also without any error. the output is 0.[code]
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Nov 4, 2011
I have a gridview in windows form. When lots of data are loaded from the database to the gridview, my application hang until all the data are loaded to the gridview. Is there any way to solve this problem? I also want to display a gif image [loading.gif] or progressbar when data is being loading to the gridview to show the user that data is being loading to the gridview. But the image and progressbar also hang.
I have also one ToolTip, I want to display that tooltip in the center of the screen. My code is as follow but it is not positioning that tooltip in the center.
Dim x As Integer = TryCastInteger(Screen.PrimaryScreen.WorkingArea.Width / 2)
Dim y As Integer = TryCastInteger(Screen.PrimaryScreen.WorkingArea.Height /2)
ToolTip1.Show("It will take few seconds to display the data.", KryptonPanel1, x, y)
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Mar 3, 2012
I've a SQL DataSource and a Datagrid in a Web Page. The data grid gets binded automatically when the page is loaded. How do I delay that until click event of a Button.
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Mar 23, 2009
created a control inheriting a textbox. it is used to format a datetime data. i created a custom property DateTimeFormatMask which is "MM/dd/yyyy" by default. problem i'm having is that when datatable is filled by adapter and the textbox is populated with the data, it is not formatted..i placed the codes that formats the data in the Validating Event which doesn't seem to be triggered at this point.below is my code on my
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Mar 31, 2010
I'm working on a VB.Net windows application.In the top half of the form application, I have a vendor number with a "GO" button and in the bottom half I have a list of tab pages. We have built the application to only go to the database and display data when the tab page is selected by the user. If I'm in one of the tab pages, and I change the vendor number and click the GO button, the data on the current tab page goes blank (it does not refresh). I have been told that I have to find a way of programmatically clicking on the tab page's tab a second time. How do I do that? I've tried using _Selected event, _Selecting event, _Click event. I've even tried to do a .Focus() on the tab page itself. Nothing seems to work to reload the new data without clicking off of the tab and back onto it manually.
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Dec 9, 2009
Let's say I have an edit view that is strongly-typed to a table called "MyData". The view has multiple tabs, each with several different fields from the table. For performance, the data is only loaded when the tab is viewed, so if you only edit a field on tab 1 and submit the form, the data for tab 2 will not be loaded.
The problem I'm running into is on the submit. I'm doing the typical routine of finding the existing record in the database and updating the passed values:
<AcceptVerbs(HttpVerbs.Post)> _
Function Edit(ByVal data As MyData) As ActionResult
Using dc = New MyDataContext
[Code].....
However, this method doesn't know which tabs were loaded, so if the tab with "desc" on it is not loaded, this method thinks the user blanked out the "desc" field, and sends NULL to the database.
How can I construct this so that only loaded fields are sent to the database, and unloaded fields are ignored?
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Feb 2, 2010
I have a database that dynamically loads from Access into a datagridview. I have to enter data manually into one column in this datagridview. I need to be able to perform calculations to this data, for example I need to sum the data in this column, sqaure it and substract it from individual sqaures of the data in the cells. I should be able to sum it sum(22,33,44,53,67,23)^2-sum(22^2,33^2,...23^2). The number of columns keep changing depending on the database I choose to load, so I need to code this dynamically too. I am not really a VB person. I did the same in excel using Visual Basic and I am trying to do it in this Visual Basic environment.I built a tool in excel(VBA) that do some statistical calculations and data analysis and I am trying to build the same in Visual Basic.
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Jun 8, 2010
I have loaded the rows data of a datagridview into a datatable object but I am not aware how to show them in crystal report.
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Dec 14, 2011
I have two rich text boxes, and two buttons on my screen. The first button grabs HTML from a URL and then converts the HTML to XML which resides in rich text box 1.
The second button is to grab the XML from the rich text box1 and then parse it to grab all the input elements by their ID.
My issue is that my parser isn't doing anything. My guess is that I'm not quite getting the XML from the first rich text box.
What would be the best way to grab the XML from a rich text box load it into memory and then parse the XML to grab all the ID tags?
Here is my code --
Imports mshtml
Imports System.Text
Imports System.Net
[Code].....
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Dec 15, 2011
I have two rich text boxes, and two buttons on my screen. The first button grabs HTML from a URL and then converts the HTML to XML which resides in rich text box 1. The second button is to grab the XML from the rich text box1 and then parse it to grab all the input elements by their ID.
My issue is that my parser isn't doing anything. My guess is that I'm not quite getting the XML from the first rich text box.What would be the best way to grab the XML from a rich text box load it into memory and then parse the XML to grab all the ID tags?
[Code]...
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May 10, 2012
I want to create a real setup project for my application so when someone want to download it he can run only setup, not default setup that provide me VB . How can I do that?
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Feb 28, 2012
Cannot get list box to display each increment and cannot get data to save correctly in order to display.
Public Class Projectile_Motion
Dim initialHeight As Double ' Holds beginning height
Dim initialVelocity As Double ' holds velocity
[code]....
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Dec 20, 2010
My company's main software package includes a hefty configuration library which loads on startup. This config library includes some mandatory settings which, if not supplied (via command line arguments), cause the entire application to exit.
This has never been an issue for our users, who launch the software via scripts which have the needed command line arguments supplied automatically. But sometimes when debugging our software we developers forget to specify the necessary arguments in Visual Studio's debug options; it's then very annoying to be greeted with the message Config specification invalid -- missing required parameters X, Y, and Z -- shutting down (I'm paraphrasing, of course).[code]...
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Oct 29, 2009
QuoteI would like to display my password from database (MS Access)into datagrid but in invisible. Below is my coding retrieve data from database, but my password is visible,
con.ConnectionString = "PROVIDER=Microsoft.Jet.OLEDB.4.0;Data Source = " & connectionpath
con.Open()
[Code].....
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