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Dynamically Adding Controlssomething that I feel should be relatively simple. 1. I need to dynamically create controls on a web page This is not a problem. 2. In order to format these dynamic controls how I want them, I first decided to put them in a Table Control. This worked fine, unfortunately the Table Control doesnt remember viewstate so it wont work for what I need. 3. To get around the viewstate problem I decided to go forward by using a DataGrid. I discovered I could dynamically add rows to a DataTable and then bind that DataTable to the DataGrid Thats fine and dandy, works ok. 4. When I assign an actual control like a TextBox to one of the items in the myDataTable.NewRow()["myColumn"], all I get is "System.Web.UI.WebControls.TextBox" and not the actual control itself. I figured I could fix this by specifying the type on the columns for the datatable via System.Type.GetType("System.Web.UI.WebControls.TextBox"), but this returns NULL and creates an error. Can anyone help clear this up for me? One extremely frustrated programmer. -micah You can't add a TextBox control to the data table. What you want to do
is handle all of the controls in the data grid, and the data in the data table. To add the TextBox programatically, and have it show render correctly, you need to add it to a controls collection (don't forget to assign an ID and enable view state). I think you should be able to figure it out with the links i provided at the bottom. Basicly, you want to do this 1. Bind the current data to the datagrid. 2. Add the text box to the datagrid (wherever you have it going) on the OnItemDataBound event (see the code project link) 3. when saving data do the following 3a. create a datarow variable and assign it to table.newrow() (see microsoft link) 3b. add values to data row 3c. add the datarow to the datatable 4. rebind the grid to the table These links may help, http://www.codeproject.com/aspnet/griddemo.asp http://msdn.microsoft.com/library/default.asp?url=/library/en-us/cpref/html/frlrfsystemdatadatacolumnclasstopic.asp http://msdn.microsoft.com/library/default.asp?url=/library/en-us/cpref/html/frlrfsystemdatadatatableclasstopic.asp http://msdn.microsoft.com/library/default.asp?url=/library/en-us/cpref/html/frlrfsystemdatadatatableclassrowstopic.asp on the microsoft links, check out the methods and properties sections. HTH, Darren Kopp http://blog.secudocs.com/  |
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