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05.16.2008 at 08:44AM PDT, ID: 23408704

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8.5

GridView Edit mode DropDownLists are acting odd

Zones: Programming for ASP.NET, C# Programming Language, Visual Studio .NET 2005

Tags: ASP.Net

I asked a question about this earlier, and got some response, but it's been over 2 months since anyone last posted, and now the heat is turning up for me to produce something for this project, so I'm hoping someone has some insight.

I have a GridView that is *mostly* working right, except for ONE nagging issue. One of the columns is a TemplateColumn whose ItemTemplate is just a Label that displays the corresponding data from a database. But there are only a limited number of valid values for this column, so to avoid user error, in Edit mode, this is a DropDownList, that will bind to an XML file for the values, then pre-select the value that was held in the Label.

For the longest time, I was unable to make the EditItemTemplate DropDownList bind to the appropriate XML file (that contains the valid values) at all. Thanks to one fo the Experts here, I finally was able to get it partially done, but for some reason, only every other Row is binding the DDL. If this were a DataGrid, I would wonder if the AlternatigRow were the issue, but this is a GridView. All rows are DataRows, there shouldn't be any difference between one row and the next.

To put this clearly, if you run a query and get a set of results, then numbered them, odd-numbered rows will correctly display the DropDownList when you click "Edit". Even-numbered rows will display an empty DropDownList when you click "Edit".

I'm at my wits' end here, and I *really* need to get this project up. To the best of my knowledge, this is the last issue I need to resolve before I can put this web app live. Please help! I am attaching the code-behind for the RowDataBound and RowEditing events, in case something there is at fault. If you need anything else, please let me know. Ideally, I'd love to get this working today, but even otherwise, within the next week would be great.

         
           
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             protected void gvResult_RowDataBound(object sender, GridViewRowEventArgs e)
    {
        if (e.Row.RowType == DataControlRowType.Footer)
        {
            ds = new DataSet();
            ServerPath = Server.MapPath(@"\");
            ds.ReadXml(ServerPath + @"\Library\xml\claimdir\Office.xml");
            DropDownList ddl = (DropDownList)(e.Row.FindControl("ddlNewOfficeUpdate"));
            ddl.DataTextField = "Text";
            ddl.DataValueField = "Value";
            ddl.DataSource = ds.Tables[0];
            ddl.DataBind();
            ddl.Items[0].Text = "-Choose Office-";
        }
        else if (e.Row.RowState == DataControlRowState.Edit)
        {
            ds = new DataSet();
            ServerPath = Server.MapPath(@"\");
            ds.ReadXml(ServerPath + @"\Library\xml\claimdir\Office.xml");
            DropDownList ddl = (DropDownList)e.Row.FindControl("ddlOfficeUpdate");
            ddl.DataTextField = "Text";
            ddl.DataValueField = "Value";
            ddl.DataSource = ds.Tables[0];
            ddl.DataBind();
            ddl.Items[0].Text = "-Choose Office-";
            ddl.SelectedValue = theOffice;
        }
    }
 
    protected void gvResult_RowEditing(object sender, GridViewEditEventArgs e)
    {
        gvResult.EditIndex = e.NewEditIndex;
        theOffice = ((Label)gvResult.Rows[e.NewEditIndex].FindControl("lblOffice")).Text;
    }

           
         

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Question Stats

Zone: Programming

Question Asked By: SeTech

Solution Provided By: raterus

Participating Experts: 1

Solution Grade: A

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