Refresh A Form's Bound Controls?

May 20, 2010

I have a windows form with multiple TextBoxes that are bound to a DataSet of type XML. I load text into the textboxes using DataSet.ReadXML method in the form's load event.

I have another windows forms application which edits the XML contents in that XML file.

How do I force the textBox controls on this form to refresh once the XML datasource file items are changed?

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Refresh Data Bound Controls In Win Forms?

May 20, 2010

I have a windows form with multiple TextBoxes that are bound to a DataSet of type XML. I load text into the textboxes using DataSet.ReadXML method in the form's load event.

I have another windows forms application which edits the XML contents in that XML file.

How do I force the textBox controls on this form to refresh once the XML datasource file items are changed?

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Refresh Bound Form After DB Insert?

Jun 12, 2009

My environment: VS2008/VB using Data Sources (datasets, binding sources, table adapters) to interact with MS Access 2007 database.

My application: A Master form displaying a 4-level hierarchy of data using listboxes instead of grids. Data source for each listbox is a query containing child table data and a stub (foreign key provided by a cross-reference table) to parent record.

Processing: User double clicks Listbox on the Master form to call a popup form bound to child table (to enable data entry). When popup SAVE is clicked, new data is saved to Child table and a new cross-reference record is created to enable future Parent-Child connections. Changes are posted directly to the underlying Access 2007 database.

Problem: On return to Master form, impacted Listbox does not refresh even though I've done another tableadapter.fill on the control. I have been unsuccessful over the last week in finding ANY way to refresh the set of queries that supply data to the Master form or the form itself. When I close/reopen the Master form, Listbox includes the new record.

Need: a way to refresh the Master table without closing/reopening.

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Can't Get Form Controls To Refresh

Jan 30, 2012

Been playing around with this and simply can't get it to work

I've got a form and I've created a button called refresh. The button is meant to do exactly that. What happens is that when the form loads, it checks the database for values. If it finds values, it creates a dynamic edit box related to the value.

I open the form and it paints accordingly and as I expect it. If I delete a value from the database then click the refresh button, it should re-draw the form and paint the background grey. The logic definitely works because I trapped the bit of code and it does hit the part where it's meant to set the background grey.

Now, I'm not sure I'm refreshing the form properly because all I'm doing within this sub is calling the form on load event: formLRQuadrantSchedule_Load(Me, New System.EventArgs)

This seems to work logic wise, just not doing what I want. So, I tried this (amongst several other things):

Dim dynTextBox As New TextBox()
Me.Controls.Add(dynTextBox)
With dynTextBox

[Code]....

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[2008] Mixing BOUND Controls With Non-BOUND Controls?

Jan 26, 2009

We are binding most of our text boxes and dropdown boxes to a BINDING NAVIGATOR (with a DATA SOURCE of a DATA TABLE).When the BN is clicked through the text boxes all change immediately.We need to use some non-bound controls as well.First one is 4 radio buttons that when clicked will change a single value in a DATA TABLE.What would be the best method to do this? Should I track when the CURRENTCHANGED event occurs on the BINDING NAVIGATOR.I'm thinking that I could trick this by BINDING the SINGLE FIELD to a HIDDEN TEXTBOX and when that textbox CHANGED event occurs mess with the radio buttons and visa-versa.

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Refresh Windows Form When Ever User Clicks Refresh Button?

Jun 5, 2009

Lets say i label "label1" , and 2 buttons named "button1" and "btnRefresh " [code]So , when user press the button 1 , the text will change. But what should i put inside btnRefresh to reload the forms ? and display the default label.text = "Form Load" ???

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Dataset, Bound Controls, Add New Row Error?

Jun 15, 2010

I don't normally use strongly typed datasets, but I am maintaining an existing application that uses them.This application has a form to edit rows in detail view, so we have the navigator toolstrip with nav buttons on top, including one to add a new row.When this button is clicked, I need to update one of the bound text boxes with a value from the underlyingThe field in question is defined as nvarchar 25 It's almost always integers in this field, but one row has a string.In the dataset, I have a table adapter to go get the max value + 1 where the field is numeric, like this:

SELECT internal_num = CAST(MAX(internal_num) + 1 AS NVARCHAR(25))
FROM dbo.invoice_log
WHERE ISNUMERIC(internal_num) = 1

[code].....

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How Bound Controls Like Textbox Going To Database

Jan 31, 2011

Please help for database connectivity using vb2008 to ms access,and also how bound the controls like textbox going to database using vb2008 as front and back is ms access

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Bound Crystal Report Controls At Runtime?

Jun 3, 2011

I am using Microsoft Visual Studio 2008 and want to design my Dynamic crystal reports. In vb6 i normally did this via bounding each control of the section1 ,2 or 3 via run time code by giving the name of that control something like

.section3.controls("txtName").text=some value

can I did the same with crystal reports as well in VB.Net if yes than how.?

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Bound Data Controls - Access ContactID?

Jan 17, 2012

I have a few bound data controls on a form. However, there are certain data fields in the same table from which this data is coming from which I would like to be able to access in memory but which is not bound to a control. I have tried looking through the properties of my datanavigator, my dataadapter and my databindingsource and can't seem to find out how to sort this.

In simple terms, I have a data navigator to iterate through various fields in my dataset. I want to be able to access to the contactID of the currently visible / selected contact. The contact ID exists in the data source but I do not want to show it, just access it. How do I do so without issuing a manual SQL call to the database again?

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Event Fires When Bound Controls Are Refreshed?

Feb 27, 2012

what event fires when individual textboxes that are bound to a data source using the properties pane gets refreshed? I wish to use this event to populate a few textboxes that are not bound.

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Filter On Dataset Clears All Bound Controls?

Feb 18, 2011

The following code works (rows are filtered by the select expression), but then all the controls in the datarepeater are empty. When set to .DefaultView all records return and all controls have their values.

Private Sub CheckBox_FilterApplied_CheckedChanged(ByVal sender As Object, ByVal e As System.EventArgs) Handles CheckBox_FilterApplied.CheckedChanged
If CheckBox_FilterApplied.Checked Then

[code].....

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Filtering Bound Controls Based On Another Control?

Oct 15, 2010

I have a form with some textboxes on it. The textboxes show values from a table. I have a binding navigator that lets you step through the records in the table and the textboxes update. What I want, is to have a control, say a listbox, that allows you to select a value which will filter the data behind the controls so that you only have one record.

So, for example, say you have a table of contacts. There are textboxes on your form that show name, phone, address etc. You could then have a listbox that showed a list of all the contacts and you could select one, which would in turn the textboxes. The filtering field could be contactID for example.

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VS 2010 Data-bound Controls Validation?

Aug 24, 2011

I'm currently working on a data entry application in VB.NET and I'm using data-bound controls by simply dragging the table from the Data Sources window onto the form. It's my first time doing this, but this will save me quite a bit of time since this table has plenty of fieldsAnyway, my problem is that when I enter an invalid value in a textbox and then delete the text it won't let me select other controls or even close the form!
For example, say I have an Age field in the DB, which is an int and I mistakenly type "," on its textbox. Then I decide I actually want to leave that field blank (considering it allows nulls) so I just delete all of the textbox's contents, after doing so, I'm not able to switch focus to another control or close the form.

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VS 2010 Programming Or Dragging Bound Controls?

Oct 20, 2011

In an earlier post today [URL].. jmcilhinney in post #9 says,Quote: If you're going to use a DataSet at all then there's no reason not to use a typed DataSet. I would not recommend dragging items from the Data Sources window directly onto a form but that is not a requirement of using a Data Source.

I was wondering what is the down side of dragging items onto the form. I don't mind doing the manual programming, I would just like to know the reason I'm doing it.

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Trim Strings Entered In Data Bound Controls?

Feb 13, 2012

We've got a bunch of forms that are using data binding through a binding source control to get text from a textbox into a dataset and then into a database. The problem is that we need to be able to strip trailing spaces before saving the data.

Is there an easy way of doing this without having to go through the dataset manually trimming every string? Ideally everything should update to keep things consistent (e.g. no trailing spaces in the database, dataset or textbox).

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Address Book Application Using Typed Dataset & Bound Controls?

May 29, 2010

I am writing a simple Address Book Application using Typed Dataset & Bound Controls. 1<sup>st</sup> Form for Entering Addresses 2<sup>nd</sup> Form for Adding New 'CITY'. To select a city for address I am using a data bound combo box which shows a list of Cities.

While entering with a address if user found the required City Name is not found in the Combo list, he opens a 2<sup>nd</sup> Form to Add a City name to database & returns to Form1.

Here the expected newly added city doesn't appear in the combo list, so I tried to Refill the underlying table with following code

[Code]...

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Set Default Values For Data Bound Controls For Addition In Program?

Jun 18, 2012

I have a vb.net 2010 form with 22 data bound controls from two tables held in a dataset which is navigated by a bindingnavigator. This successfully adds deletes and updates. However what I need is when adding a new record I need some of the fields to be pre filled out. More specifically I have points balance fields etc which could be any value but will normally be 0 on a new customer so I want to initialize them to 0 when adding new records.

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Refresh A Data Bound Control, Where The Control Is In Other Tab?

Dec 19, 2011

I have an isue, may be its simple. but i am not able to rectify this. Here it goes. I have a form to display data from database.

The form contains Tab control with 3 tabs,it has some text boxes, combo boxes and date pickers.I retrieved data from database in to data-set (ds) using a data-adapter (da) then assigned it to a dataview (dv)

[Code]...

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VS 2008 Binding Source And Changing Row Values From Code Vs Bound Controls

Sep 6, 2009

[edit]oops - stupid typo - this is resolved and explained in the next post[/edit] I've got a BINDING SOURCE - that I bind to controls - textboxes mostly. I create a row in the datatable behind this BINDING SOURCE like this.

[Code]...

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Detail Bound Form Updates Main List Form, But Does Not Update Data

Jan 29, 2010

I have a main form with datagridview containing a list of contacts:

VB
Public Class Form1
Private Db As New DataClasses1DataContext
Private Sub Form1_Load

[Code]....

After saving, I get the correct message ("Saved"), and the DataGridView in the first form gets updated in real time.

But... when I take look at the data (or close and reopen the forms) the data in the database (SQL server) have not changed! What happens!

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VS 2010 - Form.Activated - Refreshing A Form Bound To Different Tables

Feb 4, 2011

I had issues in refreshing a form that is bound to different tables in a database. Various forms allow the user to change and add and update information on the form via the database. I had created a public sub in that form that the other forms could call, after saving the data, that was supposed to refresh the data on the main form. This was not working so I researched the problem. I came across this page which pertains to Form.Activated: [url]

I placed all of the table adapter fills into this event, instead of in Form_Load, and it seems to work now, when the form first loads, and when other forms update data. My question is does anyone have experience using this and what are the consequences, if any, in using this to reload/refresh the data showing on the form?

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DB/Reporting :: PopUP Form Refresh Combobox On Parent Form

May 31, 2008

I have a parent form that has a combobox. Whn the form loads I get the data from the db and bind to the combobox. that works fine and here is the code I use in form load to cause this to happen: [code] Now if there is not an Account Type, I have a button that will pull up a small form to allow the addition of an account type. The popup form adds the data back to the database just fine, but I am now trying to get the combobox to refresh its data. So I call a public Sub that is located in the parent form to from the popup form to accomplish this task and I have walked the code and the sub is called and appears to work correctly, but the new data never appears in the combobox. Here is my public sub that i call to try and refresh the combobox on the parent form. [code] But when I go back to the parent form, the combobox is not updated with the new account. How can i get the combobox to refresh from the database with the new data?

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Auto-refresh Windows Form - Sub Form With A Datagridview ?

Apr 16, 2009

I am working on VB.Net. I have a sub form with a datagridview, that is being loaded with the criteria taken from another form. Hence this form is called with parameters.

Here is the code that calls the sub form.

Code:

where ds is the dataset to fill the datagridview and rb is the string from a radio button on this form.

Here is the code in the sub form.

Code:

Now, I need to refresh this sub form every -- minutes, depending on how the user wants it to be. For this I have given a NumericUpDown control to select the mins. All this works fine. But how do I refresh the dataset and the datagridview?

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Allow Blanks In BOUND Textboxes (bound To Int And Money Columns)?

Jun 16, 2009

I want to allow blanks in BOUND textboxes that are bound to int and money columns.

It's not letting me - apparently it knows to force digits...

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Receive Upper Bound And Lower Bound Of A Range

Sep 20, 2010

Is there anyone who can tell me the code for the below? Receive a lower bound and an upper bound of a range. Also receive a number of random numbers to generate. You must validate

1) the numbers are integers
2) the lower bound is less than or equal to the upper bound
3) the number to generate is positive (i.e., > 0).

Generate this many numbers in the specified range and keep track of how many of each are generated in an array of counters. Once all the numbers have been generated, display in a List Box the number, the raw count data, and the percentage of how many times the number was generated displayed with two decimal places of precision.

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Show Form And Bound Datagridviews?

Jun 11, 2011

I use Visual Basis 2008 With MySQL. I Have one from with 6 (six) Datagridviews controls I Have the following problem: If i use Form1.Show method than the form1 is only show if data connections are made and all the datagridviews are filled with data What i want is to first show Form1 with alle the empty Datagridviews (6)controls and then After that i want that the program make the data connections and fill DataGridView with data. form1.show ' call form other Form

Private Sub Form1_Load(ByVal eventSender As System.Object, ByVal eventArgs As System.EventArgs) Handles MyBase.Load 'in this Load event i make all the data connections en fill the datagridviews

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Form Does Not Refresh

Dec 12, 2009

I login webservice then upload files then i download files i do this inside the looping in the processing i have to change the picture box picture the Timer Event fires but the picture does not changes it seems form doestn't refresh

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Form Does Not Refresh?

Jun 12, 2006

I have created a simple VB.NET application with one form and a few modules. When a user clicks on a run button of the form the application starts and goes through differet cycle, while updating the user on status bar, runs for less than four hours.

The application works fine, it gives desired result. However, it is not able to refresh the user form, meaning status bar remains same after some time (it suppose to increment). Even when I take mouse on the form it shows timer symbole instead of default one.

My application commands another device using GPIB. Basically, PC running my application commands the device. If I look the display of device it gives correct information.

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How To Refresh Form

Oct 7, 2011

I have a form, with a datagridview. I can see the data and the related records in the DGV.I have another form that this one calls to add a new record. I need that because there are some specific parameters i need to control. But when the focus returns to the original form, I can't see the new record, even though it is there (I see it in the database).If I close the form and enter again I can see it, that is not what i want.How can I refresh the tables after the other process adds data to them?

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