How to set the default value of a dropdownlist for new records

[Mark Breen]

Hello All,

re: Telerik.Web.UI 2009.3.1103.35 and the radGrid

I am using the radgrid and would like to set the default value of a few text controls and dropdownlists for the user when they click Add New Record.

I see lots of complex examples when I search, but all I want to do is just set an initial value to zero, and the user can change it if they wish.  How can I do this?

As far as I can see, the insert event happens when the user clicks update, so I guess I need to set the value prior to the form loading?  Can anyone assist in a) the event I need and b) a few lines of the code required

Thanks in advance for your assistance,

PS As usual I have a demo tomorrow and am trying to get this going today!

Mark

[Princy]

Hello Mark,

The following code snippet shows how to set default value in textbox when grid in insert mode.

C#:

    protected void RadGrid1_ItemDataBound(object sender, GridItemEventArgs e)
    {
        if (e.Item.OwnerTableView.IsItemInserted && e.Item is GridEditFormInsertItem)
        {
            GridEditFormInsertItem item = (GridEditFormInsertItem)e.Item;
            TextBox textBox = (TextBox)item["ColumnUniqueName"].Controls[0];
            textBox.Text = "My Text";
        }
    }

Access the dropdown controls as DropDownList or RadComboBox (according to your PickerType setting) and set the SelectedValue.

Thanks,
Princy.

[Mark Breen]

Hello Princy,

thank you for your prompt and accurate response.  I am pleased to say that I did manage to get the setting of the text box default values working in the last fifteen minutes.  However, if you take a look the code I have posted below,  you can see that I have to rem out the line that creates the RadComboBox variable.  If I rem this out, the form opens.

You can see the text box is pre-populated with "Hello MaryLou", but i cannot do the same with the RadComboBox.  What is wrong with my syntax for the RadCombo?  I checked and it is a RadCombo that I am using.  I believe the problem is with the following line of code

RadComboBox BoatCraftTypId = (RadComboBox)item["BoatCraftTypId"].Controls[0];

Here is the entire snippit, thanks again Princy.

Mark

 protected void RadGrid1_ItemDataBound(object sender, GridItemEventArgs e)
        {
            // This code turns off the Column for the foreign key
            if ((e.Item is GridEditFormItem) && (e.Item.IsInEditMode))
            {
                GridEditFormItem editform = (GridEditFormItem)e.Item;
                editform["OwnersName"].Parent.Visible = false;

                GridEditableItem item = (GridEditableItem)e.Item;

                TextBox VesselName = (TextBox)item["VesselName"].Controls[0];
                VesselName.Text = "Hello MaryLou";

                //RadComboBox BoatCraftTypId = (RadComboBox)item["BoatCraftTypId"].Controls[0];
                //BoatCraftTypId.SelectedValue = "0";


            }

[Mark Breen]

Hello Again Princy,

Just as I was about to give up and move to another piece of my system, I thought about one last thing to consider.  The unique name I had given the RadCombo.  It is my habit to set the header text to be equal to the looked up value, (Craft Type  is more meaningful as a header that BoatCraftTypeId).

So, usually when I name the header, I copy and paste and set that as the unique name also - to keep them matching.  Of course the previous code could not work because there was no column named BoatCraftTypeId in the Grid.  When I changed the code to CraftType, it works a treat.

Thanks Princy for the super prompt support that seems to be the norm for Telerik.  It is a joy to use the Telerik products and deal with Telerik support teams.

Mark Breen

Ireland