Vb net textbox not updating
You see that I registered an Async Post Back Trigger on the Click event of the button.I also added a label that will be updated by the event raised by the textbox.
Selected Index) Dim sql2 As My Sql Command = New My Sql Command("SELECT TXMasters. In the case of Image Buttons and server buttons, by the time the MS AJAX framework "informs" the editor that a partial update is about to occur, the POST data has already been collected and recorded. Unique ID & "',''); return false;") End If End Sub Protected Sub Rad Grid1_Item Command(sender As Object, e As Grid Command Event Args) If e. Item Is Grid Editable Item Then Dim edited Item As Grid Editable Item = Try Cast(e. Content End If End If End Sub Protected Sub Rad Grid1_Need Data Source(sender As Object, e As Telerik. Data Source = Get Data() End Sub Protected Function Get Data() As Data Table Dim dt As New Data Table() dt. The editor does not get a chance to set the updated content properly. Item, Grid Editable Item) Dim cell As Table Cell = edited Item("my Grid HTMLEditor Column") Label1. Because a majority of Web applications involve reading data and not updating it, one-way data binding keeps the size and complexity of the page architecture to a minimum for the most common scenarios. However, there are times when you do want to update data. If you are using a dataset, you can write changes to the dataset and then call the data adapter to send changes from the dataset to the database. When Rad Editor and an Image Button are used to update Rad Grid fields, you can use the approach from Example 5. Is In Edit Mode Then Dim button Id As String = If(Type Of e.
You should, however, properly reference the Image Button from the code behind and handle its onclick event in order to call the __do Post Back() method (Example 7). Grid Need Data Source Event Args e) protected Data Table Get Data() Protected Sub Rad Grid1_Item Created(sender As Object, e As Grid Item Event Args) If Type Of e. Item Is IGrid Insert Item, "Perform Insert Button", "Update Button") Dim but As Image Button = Try Cast(e.
So I adapted a bit Ben's solution, and I add hidden text box, and update its value before calling the do Post Back method.
To implement that you need to add 4 "things" in your ASP. You need a textbox to store the value you want to pass over to the Update Panel, but you don't want to show it in the page, so it must be hidden via CSS.
All my internet searches actually shows how to do this using background thread - it is the approach that needs to be taken in a proper programming context, however there are times when you just want to do something quick & dirty or you want to augment an existing app / port where you don't want to introduce new elements.
There are also considerations to be made when both UI and worker thread access the same data, especially with regard to data binding (see my post about collection change not supporting multi-threading out of the box).
The Web Forms data-binding architecture allows you to bind control properties to a data source, making it easy to display data on the page. To enhance the Web Forms page you have created, you might want to explore some of the following ideas: Walkthrough: Creating Read-Only Data Access in a Web Forms Page | Introduction to ADO.