Asp gridview onupdating

09-Dec-2020 07:50

asp gridview onupdating-4

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I am trying to update a row in a Gridview control whilst it is in edit mode.I am trying to extract the old data field values which have not changed during the edit process, but can't seem to find them, as the postback after clicking the edit button removes those values.Line (8) removes the selected item from one list after adding it to another but for some reason I keep getting a Invalid Operation Exception on line (11).Any help is appreciated.1 Protected Sub btn Remove Items_Click(By Val sender As Object, By Val e As System. Click 2 For Each lst Item As List Item In lst Salutations. Selected = True Then 4 ' Add item to the removal list box 5 lst Salutations For Removal. Add(lst...binding an attribute from a dropdown list control? You can set the Css Class on the page load, Data Bind or Pre Render method. Attributes["Class"] = "cssclassname"; See this link for details- Find Control("Drop Down List1"), Drop Down List) If Sql Data Source1. Hello all, I have a gridview that I created and set the view to alow for edits and updates. Thanks for the help, MS Can you not set the datakeynames in the codebehind based... I have a table, Lessons, that stores an ID for one of its values: Category. Gridview error when adding a dropdown list box for updated. I can achieve it by hard coding the key field I'm ineterested in but this seems clunky - is there a way of getting at the Fields names contained within a list instead of their values ?

asp gridview onupdating-80

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Say you click edit, now you get some input controls, you change a couple of values, then click update.

In the example below I am using a simple Grid View control and updating the User Name, First Name and Last Name.

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