Forms Data Controls :: Gridview Fired Sorting Event Without Handle On Statement "helper.ApplyGroupSort()
Jan 25, 2010
I have problem with gridview sorting. I am using online example to sort a grid view. see the link [URL] but I always got an error "The gridview fired sorting event without handle" on this statement "helper.ApplyGroupSort();"
<table width="100%">
<tr>
<td colspan=3><asp:Label id="category_name" Runat="server"
ForeColor="#ff0000" Font-Bold=true /></td>
</tr>
<tr>
<td colspan="3" align="center" width="100%">
<asp:GridView ID="dg_drawings"
runat="server" AutoGenerateColumns="False" EnableViewState="False" CellPadding="5" CellSpacing="0" Width="90%"
>
<Columns>
<asp:BoundField DataField="Description"
SortExpression="Description" />
<asp:BoundField DataField="sub_description"
SortExpression="sub_description" />
<asp:BoundField DataField="drawing_id" InsertVisible="False"
ReadOnly="True"
SortExpression="drawing_id" />
<asp:BoundField DataField="DRAWING_DESCRIPTION"
SortExpression="DRAWING_DESCRIPTION" />
<asp:BoundField DataField="DWG_URL" SortExpression="DWG_URL" />
</Columns>
</asp:GridView>
</td>
</tr>
</table>
Here is my C# code
public partial class listDrawings : System.Web.UI.Page
{
admin _admin = new admin();
private GridViewHelper helper;
int categoryid = 0;
protected void Page_Load(object sender, EventArgs e)
{
if (Convert.ToString(Session["logged_in"]) == "1")
{
ph_header.Controls.Add(LoadControl("../controls/builder_header.ascx"));
}
else
{
ph_header.Controls.Add(LoadControl("../controls/header.ascx"));
}
/*if (Convert.ToString(Session["details_hit"]) != "1")
{
_admin.add_page_hit("Standard Details");
Session.Add("details_hit", "1");
}
*/
string categoryidStr = Request.QueryString["categoryid"];
string category = Request.QueryString["category"];
//int categoryid = 0;
if (categoryidStr != null)
{
categoryid = Convert.ToInt32(categoryidStr);
}
category_name.Visible = true;
category_name.Text = category + " Drawing Details";
get_category_drawings(categoryid);
}
protected void get_category_drawings(int categoryid)
{
OracleConnection myConn;
OracleCommand myCmd;
if (categoryid == 3)
{
myConn = new OracleConnection(ConfigurationManager.AppSettings.Get("oracle"));
myCmd = new OracleCommand("DRAWINGS.GET_STAR_SUB_DRAWINGS");
myCmd.CommandType = CommandType.StoredProcedure;
myCmd.Connection = myConn;
myCmd.Parameters.Add(new OracleParameter("iCATEGORY", OracleDbType.Int32, ParameterDirection.Input)).Value = categoryid;
myCmd.Parameters.Add(new OracleParameter("iSUB_CATEGORY", OracleDbType.Int32, ParameterDirection.Input)).Value = 0;
myCmd.Parameters.Add(new OracleParameter("oDRAWINGS", OracleDbType.RefCursor, ParameterDirection.Output));
}
else
{
myConn = new OracleConnection(ConfigurationManager.AppSettings.Get("oracle"));
myCmd = new OracleCommand("DRAWINGS.GET_STAR_DRAWINGS");
myCmd.CommandType = CommandType.StoredProcedure;
myCmd.Connection = myConn;
myCmd.Parameters.Add(new OracleParameter("iCATEGORY", OracleDbType.Int32, ParameterDirection.Input)).Value = categoryid;
myCmd.Parameters.Add(new OracleParameter("oDRAWINGS", OracleDbType.RefCursor, ParameterDirection.Output));
}
try
{
myConn.Open();
this.dg_drawings.DataSource = myCmd.ExecuteReader();
dg_drawings.DataBind();
helper = new GridViewHelper(this.dg_drawings);
string[] cols = new string[2];
cols[0] = "Description";
cols[1] = "sub_description";
helper.RegisterGroup(cols, true, true);
helper.ApplyGroupSort();
}
catch (OracleException ex)
{
if (categoryid == 3)
{
_admin.send_email("resources/listDrawings.aspx", "DRAWINGS.GET_STAR_SUB_DRAWINGS", ex.Message);
}
else
_admin.send_email("resources/listDrawings.aspx", "DRAWINGS.GET_STAR_DRAWINGS", ex.Message);
Response.Redirect("~/error.aspx");
}
finally
{
myCmd.Dispose();
myConn.Close();
myConn.Dispose();
}
}
}
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[code].....
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[code]....
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[Code]....
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I Read This [URL] but when i click next page mygird be Empty and blank
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Moderators Note: THIS ISSUE IS BIG FOR ME AND EVEN IF POSSIBLE, GET THE REPLY FROM THE DESIGNER OF GRIDVIEW. I have been looking for him for long. I am really fed up with reviewing a good lot of web pages on how we can possibly customize the gridview to enable sorting and paging. So many sites have listed out a lot of information and so many guidances. But the problem is that one works out fine and the other is a burden. I really feel bad about being given the job of customizing this kind of a gridview which has no user friendly approach to it. Also, this control is rendered without the pager links inside the <tfoot> tag. I have tried the Pear Pager in php. It is that good and easy to use and compared to that, the gridview in asp.net is the worst ever control i have ever tried so far.
1. i can use the images to indicate the sorting direction
2. I can have the custom pager like
[code]
<<Previous 1 2 3 .. 7 Next >>.
[/code]
When i click the next when i am viewing the page at 3 , the pager links should change as
[code]
<<Previous 2 3 4 .. 7 Next >>
[/code]
Kindly look into this type of requirement and firstly tell me whether this is possible with the gridview control. I would like this request even to be escalated to the designers of the gridview control also, so that Microsoft comes out with a reply THAT WORKS and not the kind of stuff like surfing through a lot of links and pages and finally wasting a lot of days precious time and still breaking the head with this useless control. I have spent a lot of time in searching for a perfect way. Not writing a code that is non-standard. I am really serious b'cos I have spent weeks in customizing this control. If I dont get a solid reply atleast now, I am going to generate all the output by HTML content by custom coding.
View 7 Replies
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[Code]...
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Currently when a user clicks a column to sort, the controller for the view calls the GET action method. This I guess is all fine and good, but the problem is that this view has a search form (which is a model in it's own right) with some text boxes and some drop down lists. When the GET action method is called, I lose all of the information in the search criteria. So when ever someone searches for something, but then wants to sort the results, it requries the db for all records (because all of the search criteria is cleared).
I guess there could be two solutions:
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2) Is there a way to make the sorting event of a column call the POST portion of the action method? That way I'll have the search form / model information and be able to sort the search result content instead of query for all records.
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View 6 Replies
May 24, 2010
I have a rowDeleting even on my gridView. When I click Delete link, the Rowdeleting is not fired. I checked my aspx...and I have it there...I dont see any problems there..bu still when I click delete, my page is refreshed without calling RowDeleing event.
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