Store the combobox data in a global dataset and refresh it on application idle time.

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by: stingrays | last post by:

Below is my code for a combobox. Basically, I have 2 comboboxes. 1 box is the application selection and the other retrieves data from the dataset (SQL Server) to populate the drop down in the otehr box. I want to make a selection in the app combobox, update the second box and when I select a new app, it should remove all items in teh 2nd combobox and refresh the list with only the selected app. With this code it appears the binding is...

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by: Lubomir | last post by:

Hi, I have a combobox and datagrid in a form. When an Item is selected from a combobox, a method is called, which will make selection from a database according selected item and populate datagrid. I used comboBoxLastName_SelectedValueChanged handler, but this handler is called for every Item when combobox is initialized at the start. It means there is made database access for every item, which is not needed and slows down application.

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When a button is clicked, a date is inserted or added into a combo box like this : ComboBox.Items.Add(string) or ComboBox.Items.Insert(0,string); Either way, the new string does not show up in the ComboBox. I get no errors or problems, it just will not work. At load time I am retrieving dates from an Oracle database and adding them to the ComboBox with out any problems. However, once the application is up and running I cannot add to the...

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unresolved combobox refresh - (repost)

by: Doug | last post by:

This is a repost of an item that I still cannot resolve. I have 3 combo boxes. The first leads to the second to the third. When I have selected a value in the second box, the third box shows the available information based on the second combo box selection. But if I change my mind and select a different item in the second box, after the third box has been populated, the third box still retains the information that was previously...

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Combobox not refreshing when linking to dataset

by: Simon Verona | last post by:

I have a combobox that is contained within a user control. Whilst the application is running, I'm attaching the combobox to a new dataset. The problem I'm getting is that the combobox doesn't appear to reflect the new dataset. The same code seems to work fine if the combobox is set to the dataset on initialisation. What have I done wrong? The code in full that I'm using to update the dataset and attach to the combobox is as follows...

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