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.NET Forum / ASP.NET / DataGrid / August 2003cancel saving data in datagrid
My datagrid cells are all editable textbox and attached onTextChanged event so that every changes will be saved in the datatable on next postback. My problem is if the cancel button is clicked instead of save button, i don't want to do any validation and saving data to datatable but only just quit. I can't do that now becuase the onTextChanged event runs before cancel button click event. So, is there a way to solve it? Thanks I may be missing something but why not: 1. Disable validation for your cancel button (set the property "Causes Validation" to false). 2. Save your data in the saveButton Click handler, rather than TextChanged. That way if cancel is pressed, validation won't occur and changes won't be saved. You can redirect to another page or whatever.  SignatureJim "Remember, an amateur built the Ark; professionals built the Titanic." > My datagrid cells are all editable textbox and attached onTextChanged event > so that every changes will be saved in the datatable on next postback. My [quoted text clipped - 3 lines] > click event. So, is there a way to solve it? > Thanks My datagrid is editable which means all cells in all rows are textbox instead of label. So, at any time, the data can be changed. When the field is updated, OnTextChanged event fires and the data is saved to datatable first. So, even I set the cancel button causes validation to false, the OnTextChanged event still fires and so error occurs since the datatype mis-matched from the datatable. I must have the OnTextChanged event, otherwise all changed event may be lost on next postback. > I may be missing something but why not: > 1. Disable validation for your cancel button (set the property "Causes [quoted text clipped - 12 lines] > > click event. So, is there a way to solve it? > > Thanks There are a couple of ways around this I think. The first one I KNOW works because we use it: 1. Have an edit linkbutton in the first column of your grid. In the linkbutton command handler, grab the data and put up a different page with that data in a text box and allow it to be edited. It's more elegant IMHO anyway and allows you to have textboxes and dropdown lists, etc. if appopriate for your grid columns. Have save and cancel available. Save (on the "edit" page) updates that row of the table; cancel bails out without firing the validator. 2. Let the grid edits modify your DataSet object (in memory), and save out your DataSet to to the DB table at one in the save handler. Each row in your ds has a RowChanged (or something like that) property so you can even get efficient and only update the ones that need it. SignatureJim "Remember, an amateur built the Ark; professionals built the Titanic." > My datagrid is editable which means all cells in all rows are textbox > instead of label. So, at any time, the data can be changed. When the field [quoted text clipped - 24 lines] > > > click event. So, is there a way to solve it? > > > Thanks Free MagazinesGet these publications absolutely FREE for up to 12 months. There are no hidden fees and no obligation. Simply choose a title, complete the application form and submit it. Read more ...
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