Bind StudentCombobox To The StudentbindingSource Of The Main Form And To Bind StudentDataGridView?
May 7, 2010
I have a form called studentForm which has a studentCombobox, studentTextbox and a studentDatagridView
In the constructor of the studentForm I need to bind studentCombobox to the StudentbindingSource of the main form and to bind studentDataGridView to appropriate binding source in the mainForm.So that this datagrid view displays all the bookings for the studentID currently selected in studentComboBox
studentComboBox.DataSource = MainForm.StudentBindingSource
studentComboBox.DisplayMember = "StudentID"
studentDataGridView.DataSource = MainForm.StudentDataSet
studentDataGridView.DataMember = "Names "
This is the code I wrote in the constructor
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Feb 28, 2011
I am trying to bind my SQL param's qurey to bind to a table. My problem is i get this error "Fill: SelectCommand.Connection property has not been initialized."
Protected Sub Button1_Click(ByVal sender As Object, ByVal e As System.EventArgs) Handles Button1.Click
If RadioButton3.Checked = True Then
Dim connectionGrid As SqlConnection = New SqlConnection("Data Source=BST;Initial Catalog=dsfs;uid=dfsdf; pwd='dsfsf'")
Dim commandgrid As SqlCommand = New SqlCommand()
[code]....
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Sep 2, 2010
I'm currently developing an application with a reasonably complex DataGridView that allows the user to build the lines of a sales document: Quantitiy, Description, Price, etc with some additional fields to help calculate price based on cost or discount i'm sure you get the jist - all this means we're not just diplaying data but adding and manipulating it - It also means there's mainly decimal fields, nit just simple text fields
Now, i'm new to VB.net, so i've perhaps done things a bit backwards during my learning curve, namely designing and coding my DGV before creating the underlying database table and binding to it - so as i'm sure you can image there's a bit recoding to do to allow for the fact that it's now bound to a datasource.
I'd got the DGV working just how a wanted it to, but now that i've bound it to a datasource i'm hiting multiple problems with: Formating the appearance of figures in the DGV Problems with blank fields while enering data (before the i try to save the data back to the database) How the DGV is functioning - it seems to behave differently when adding lines to a new sales document than it does when adding lines to an existing sales document
And given that when saving edits to an existing line i need to provide a valid update command i'm begining to think that it might be easier to scrap the databinding altogether and just Select, Add and Edit the database with code rather than binding the DGV in the IDE
I've read various threads about avoiding databinding due to it's limitations, but i've also read that it's far better in later versions of Visual Studio and .net. and i'm using VS2010
I'd just like some advise as to whether my gut feeling is right or whether i should persevere with databinding the DGV. i've noticed some quirks of databinding while working with other controls such as text and combo boxes, but i've overcome these and the result seems to be easier than coding the data transfer manually.
But i'm really struggling with databinding the DGV and the fact that i'm dtatbinding to a seperate table to the rest of the controls is leaning me away from databinding
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Feb 20, 2010
How to bind data to a Form. So for example i have a form called 'Form1' and want to add data from Table1 on to the form.
1. How can i bind data to the form
2. How can I populate a listview with data that I have bound to the form
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Apr 23, 2011
I just get the database values. Database values are converted to xml format using for nested keyword. I am having the proper xml file. Now I need to bind this xml data into PDF form. In pdf form I a having one table. I need to fill this table using xml data.
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May 2, 2012
I have the following XML file:
<?xml version="1.0" encoding="utf-8" ?>
<root>
<Language code="0" control="form" attribute="text">
<NL>Upload expansies</NL>
<UK>Upload expansions</UK>
</Language>
[Code] .....
I would like to bind the text between the NL or UK tags, based on a setting, to the control with the name in the attribute "control".
I started with this:
Dim xf As New Xml.XmlDocument
xf.LoadXml(My.Resources.Languages)
I am thinking I need to do something like a search in the xmldocument for the specific control, then get the text from the children.
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Oct 14, 2009
when I compile the dialog do not have the picture on it...here is the classfile data Tier
Public Class ChemistryDataTier
Private aDataSet As chemistryDataSet
Private aTableAdapter As chemistryDataSetTableAdapters.ChemistryTableTableAdapter
Public Function getChemistryData() As chemistryDataSet
[code]....
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Sep 26, 2011
I've started to write an application in Visual Studio 2010 (VB) and I have trouble finding a way to create a button that starts a timer that after 3 sec displays next record of a database (something like slide show). I have a form with 3 textbox (id, field1, field2) and 2 buttons (start and stop).
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Oct 10, 2009
I have a MS Access Database with 2 fields 1) Text2) PictureI want to bind the data from the DataSource to the Dialog FormI have not problems getting the field one to display the text inside a combobox and binding the data to the combobox.I am having trouble getting the .jpg image to display in a pictureboxthe picturebox is Field2 of the datasource...
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Apr 23, 2009
how to get this error becauser during i'm closing the form it will always appear.. can not bind property witht field name... i guess it's because i'm closing the form.I'm having long time to solve this problem... i can't solve because it didn't give line or part of the code has an error.. it just appear the error "Can not bind property"
anybody please help me what kind of exception do i apply that can accomodate this error... or give me the codes that will work on this error...
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Mar 21, 2012
Is it possible to bind a listview on a windows form to a list of?? [code]
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Mar 29, 2012
I'm using VB 2010 Express and I want to connect it to sql server 2005 where I have db with just one table.What I want is to write code to connect to db and bind database fields to form controls like text boxes. I'm new in VB.net, and have found some code on net but when I try to load form textbox is empty. Here is full
[Code]...
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Oct 17, 2011
I have created a form with three comboboxes. means
FirstNameComboBox
MiddleNameComboBox
LastNameComboBox
All fields are select ( name ) from a "CustomerName" table. "CustomerName" table is have more than ten thousand records. I am use three binding sources its worked great but it is very slow bcz three comboboxes are filled data on form loading time. I am using visual studio 2010 (visual basic).
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May 11, 2011
I am trying to bind a DataGridView control on my windows form. However, it doesn't appear to be working. Am I missing a step somewhere? I cannot get the objects in my collection to display in the DatagridView.
Here is a sample of my code. I have not included the Person class.
'CREATE A COLLECTION OBJECT.
Dim p As New List(Of Person)()
'ADD PEOPLE TO COLLECTION.
[Code].....
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Apr 24, 2011
I am trying to bind data from a text box on my form to a field in my database table. First of all I have created a DataSet, BindingSource and Table Adapter in the forms Design view, but I am having from there. Under the properties of each text box I have set the DataBindings (Text) to the field in the table under the forms instance and DataSet rather than the Projects Data Sources. I am very rusty at Visual Studio 2005 and that is all I have to work with.
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Mar 11, 2009
I have a problem to solve and not quite sure if the way I think is correct.
I have a main form class MainForm the class has got: a variable call Value and a label called LabelValue
Now I would like to automatically update LabelValue every time the Value changes his value
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Oct 14, 2010
Using VB 2008. We have an app with a third party grid on it works well enough. This is a small utility within a bigger suite, and adding/updating it involves a simple EXE copy. The issue I am trying to address is that not all customers will have the 3rd party controls on their systems, and we want to avoid deploying them if we can.
Can I build the app so that if the controls are present, the app uses them. But if they are not present, I use a simpler control? I picture using a 'launcher' form that tries to load Form2 with 3rd party. if it errors, then just load Form3 with common controls. But can I even get to that point? With missing controls, will the app even load? I understand Late Binding for objects, but this is a control right on the form. Can I late bind a control and add it to form dynamically perhaps?
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Sep 28, 2011
I have a table in my database with 5 columns (ID1 to ID5) and just one row. I'm trying to bind a comboBox, to show ID1 through ID5 in the combobox when my form loads. I have a dataset and tableAdapter's made for this already. I just want to know how to bind a combobox to those ID values.
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Jul 11, 2011
Is there an equivalent to C#'s MVC [Bind(Include="Title,Description")] in VB?
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Jan 18, 2012
I have an unbound DataGridView
I want to be able to add just a few rows in one specific column, save this to My.Settings, and be able to load those words back into the DGV at the press of a button, make any changes, then re-save in My.Settings.
I don't want to have to bind my DGV to a source.
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Sep 2, 2009
I have a vb winapp that reads data from an xml file; this is the code:
Dim doc As New XmlDocument
Dim ds As New DataSet
ds.ReadXml(Application.StartupPath + "Nomi.xml")
Dim dt As New DataTable
dt = ds.Tables(0)
But when i debug i get an error System IO cannot finde file C:...DebugNomi.xml
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Apr 1, 2010
I know I've done it before but I'm drawing a complete blank on this.Where can I modify the code for:
BindingNavigatorAddNewItem_Click
I need to add a try catch block to it because if the user clicks on it twice, it tries to add a second new blank record and throws an exception.
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Mar 15, 2010
url....is it possible to bind this through dataset? i'm looking for any but i can't find (or maybe i'm just not looking at the right direction.
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Jul 15, 2011
But I'm having a problem with showing the right info in a gridview.
Basically I've got a maintenance tool for an application. And I want to make it multi language.
This is a check for the language:
'setting the column name where to get the text resource from
Dim comment As String = "comment"
If (licentie.getlanguage() = "NL") Then
[Code]....
So far this works. But in my template I've got the following code in the gridview:
<asp:Label ID="LabelType" runat="server" Text='<%# Bind("Comment") %>' />
How do I set the column 'comment_NL' when the language is set 'NL' in the bind?
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Apr 30, 2012
Algorithm to count the time that occured on the same period, how to bind the dictionary to the GridView? Pls take a look to the answer.
I tried to add a GridView and then on the code-behind: GV.DataSource = timeRangeCounts and bind it, but in return:
The data source for GridView with id 'GV' did not have any properties or attributes from which to generate columns. Ensure that your data source has content.
take a look at the code below:
The first helper class is used to hold the counts of exact and sub range matches:
Public Class TimeRangeCounter
Property ExactRangeMatch as Integer
Property SubRangeMatch as Integer
[Code].....
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May 8, 2009
I am populating a textbox (txtFileNature) with a value from a popup window. The textbox has an onfocus handler set to
onfocus=("this.blur();")
The problem is that I want to do some calculations based on the value of txtFileNature and want to display the result below it. In which event can I can use my VB code. I can't use the textchanged event since I am not typing in the textbox.
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May 17, 2011
How can we databind a datagridview to some of the My.Settings (user scoped) properties so the user can edit the values? This must be to a datagridview. I know we can bind to My.Settings in a form with textboxes and so on, but in this case we just want it as list of editable strings in a datagridview.
Of course some My.Settings entries can have different datatypes which complicates matters but generally we're only working with strings and booleans. Also, let's assume the user understands that he must enter the string "true" to set a boolean to true. No checkbox column needed. Here's what we are using (and it works), just looking for a better, leaner way: [Code]
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Dec 21, 2009
I want to Bind a BindingNavigator to a table using OLEDB or any other method (excluding the automatic stuff for increased complexity of my CW). I bound the Data Grid to the data using the following code
Try
Dim DA As OleDb.OleDbDataAdapter = New OleDb.OleDbDataAdapter("SELECT Question.Question_ID, Question.Question_no, Question.Question FROM Question INNER JOIN Quiz ON Quiz.Quiz_ID = Question.Quiz_ID WHERE Question.Quiz_ID =" & GetID(combQuiz_Title.SelectedItem), myConnection.GetConnection)
[code]....
Then I created my own delete and save commands. But I dont how to do the same using BindingNavigator
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Oct 7, 2010
How to bind a database having 2 or more tables in it using vb.net.
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Mar 8, 2009
Is possible to bind a dataset to a listbox and display the appropriate columns and rows the same as a Datagridview ?
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