I am using Telerik RadGrid in my project.

I have a "Datetime" column (CreatedDate) in RadGrid, in which records are shown from SQL Database using DataSource.

 

Few records in Database "DateTime" column have NULL value and few records have proper date and time.

When I run my Web Page, everytime I get "01/01/0001 12:00:00 AM" datetime format in RadGrid "DateTime" column, for all the records.

Despite of proper records in Database, output is not as per expectation.

 

I am new to ASP.NET as well as Telerik Controls. Please reply what I am missing in my code.

Thanks in advance.

Hi all, I wanted to use a radgrid as a way to enter data for a couple columns (Using DropDown's) and the CommandItem as the button to insert new rows. 

I don't want to attach a Datasource to this, I just want to enter data, then loop through the rows and insert to SQL. I saw other posts about this with no answer or links to broken pages.

 <telerik:RadGrid ID="RadGrid1" runat="server" AutoGenerateEditColumn="True" CellSpacing="0"  GridLines="None">
                    <ClientSettings>
            <Selecting AllowRowSelect="True" />
        </ClientSettings>
        <MasterTableView AutoGenerateColumns="False" CommandItemDisplay="Top" DataSourceID="sdsDisks">
            <Columns>
                <telerik:GridEditCommandColumn ButtonType="ImageButton" UniqueName="EditCommandColumn">
                    </telerik:GridEditCommandColumn>
                <telerik:GridDropDownColumn FilterControlAltText="Filter Disk_Speed column" HeaderText="Disk Speed" UniqueName="Disk_Speed">
                    <ColumnValidationSettings>
                        <ModelErrorMessage Text="" />
                    </ColumnValidationSettings>
                </telerik:GridDropDownColumn>
                <telerik:GridDropDownColumn FilterControlAltText="Filter Disk_Size_In_GB column" HeaderText="Disk Size in GB" UniqueName="Disk_Size_In_GB">
                    <ColumnValidationSettings>
                        <ModelErrorMessage Text="" />
                    </ColumnValidationSettings>
                </telerik:GridDropDownColumn>
                </Columns>
            <EditFormSettings>
                <EditColumn FilterControlAltText="Filter EditCommandColumn1 column" UniqueName="EditCommandColumn1">
                </EditColumn>
            </EditFormSettings>
            </MasterTableView>
        </telerik:RadGrid>

I have a Telerik RadGrid and trying to export the contents to Excel / CSV but depending upon what I do / try, get one of two errors and hoping someone could help.
Error 1:  "Unhandled exception at line 15, column 9936 in http://localhost:4940/Telerik.Web.UI.WebResource.axd?"I get this error when trying to export the contents using the following ImageButton click event.....Protected Sub ImageButton1_Click(ByVal sender As Object, ByVal args As Web.UI.ImageClickEventArgs) Handles ImageButton1.Click
        Try
            Dim s As String = String.Empty
            Dim exp As InvReport = New InvReport()            s = exp.GenerateInvReport()            Response.ClearContent()
            Response.ContentType = "text/comma-separated-values"
            Response.AddHeader( _
                "content-disposition", _
                "attachment; filename=" + _
                "export.csv")
            Response.Buffer = True
            Response.Write(s)
            Response.Flush()        Catch ex As Exception
            Response.Clear()
            Response.Write(ex.ToString())
            Response.Flush()
            Response.End()
        End Try        Response.End()
    End Sub
Error 2:When researching, I see that the Telerik Grid has a built in feature to allow you to export the grid's contents.  However:  this doesn't work either.  When I try the following:RadGrid1.ExportSettings.ExportOnlyData = True
RadGrid1.ExportSettings.IgnorePaging = True
RadGrid1.ExportSettings.OpenInNewWindow = True
RadGrid1.MasterTableView.ExportToCSV()
It appears the grid is "exported", but instead of opening the "Open / Save" dialog box, it just shows the contents in the same window, just one big grid without any paging.  It doesn't open a new window or anything. 

hi,

i want to add some custom information in image manager upload panel. in image manager upload panel ,there is information like max file size allowed,File extension allowed. i also want add some message below or above this message and i want to remove override check box because i always rename the uploaded file to unique name . please see the attachment.

how can we do that ?

 

 

Thanks on advance.

 

BesT LoLo

GridDropDownColumn - is it possible to set datasource instead of datasourceID?

 

In the sample I see 

DataSourceID="SqlDataSource4"

But I'd like to bind the column in the code behind.

Our situation is a little unique. We have developed a framework which allows us to create dynamic grids that load based on the customer's needs and everything is generated on the pageinit and then loaded into a placeholder.

Right now we have to bind our dropdowns in the itemdatabound, which works but we could easily build it all in if we could set the datasource rather than just a datasourceid (but maybe there's a solution?)

 

Here's our method that creates the dropdown column (method is called in a foreach loop that loops through each column that needs to be generated, the code below is just one method of many that generates different column controls):

       

          //WOULD BE NICE IF WE COULD DO:
          //List<TestList> list = new List<TestList>();
          //col.DataSource = list;
          //col.ListTextField = "Name";
          //col.ListValueField = "ID";

 

Anyone have any ideas?

Could any one provide a sample online page implementing rad grid with a detail table and custom paging. Both rad grid and detail table should have custom paging. I need an example with need data source event.  I would like to see the following things working:

1. Get pagination working in detail table

2. Ability to change the page size and read new page size value in Need data source event.

Any help is greatly appreciated. 

Thanks

Ramana

Environment:

 ASP.NET 2.0 

Telerik Web 2010 Q3 (Telerik.Web.UI_2010_3_1317_Dev.msi)

 

The popup calendar on my RadDatepicker is not displaying properly in Chrome.  See attached image.  

The calendar works fine in IE.

 

 

I have come across a problem with the editor when adding a table or using the table wizard over chrome browser.

We have recently upgraded the telerik controls from V 2013 to v2015.1.401. After upgrade new version that some functionality are messed up in chrome browser like Image and Tables resize functionality by dragging is not working. Please follow below points to reproduce the issue.

On the Editor page,

from Design view go to HTML view,switch back to Design view, add a table or use table wizard.
Then try to increase/decrease table size with mouse.That Mouse/cursor is not left that table position.

Please refer link : http://screencast.com/t/UMOa20tGyv

The above issue found on on telerik demo site as well.

I have RadAsyncUpload control defined as following:

the PostbackTriggers property works fine if I have clicked the button "btnSave",  but in some case I need to simulate the button click automatically, 

None of the following javascript or JQuery methods solved my problem , they fire the click event but the files collections is always empty

I am having an issue with using a RadTooltipManager on RadTreeView nodes here is related code - this sits inside a user control:

<asp:HiddenField runat="server" id ="ResourceToolTip"/>
                        <telerik:RadToolTipManager
                            ID="RadTooltipManager1"
                            runat="server"
                            AutoTooltipify="False"
                            Position="TopCenter"
                            EnableViewState="False"
                            OnAjaxUpdate="RadTooltipManager1_AjaxUpdate">
                        </telerik:RadToolTipManager>
                        <telerik:RadTreeView
                            runat="server"
                            ID="tvResourceKitBundles"
                            OnClientContextMenuShowing="onClientResourceTreeContextMenuShowing"
                            OnClientContextMenuItemClicking="onClientResourceTreeContextMenuItemClicking"
                            OnClientMouseOver="onNodeMouseOverResourceTree"
                            OnClientMouseOut="onNodeMouseOut"
                            OnClientNodeDragStart="onResourceKitDragStart"
                            OnClientNodeDropping="onNodeDropping"
                            OnContextMenuItemClick="tvResourceKitBundles_ContextMenuItemClick"
                            OnNodeEdit="tvResourceKitBundles_NodeEdit"
                            OnNodeDrop="tvResourceKitBundles_OnNodeDrop"
                            EnableDragAndDrop="True"
                            EnableDragAndDropBetweenNodes="true">
                            <ContextMenus>
                                <telerik:RadTreeViewContextMenu ID="tvResourceKitContextMenu" runat="server">
                                    <Items>
                                        <telerik:RadMenuItem Value="Rename" Text="Rename"></telerik:RadMenuItem>
                                        <telerik:RadMenuItem Value="Edit" Text="Edit"></telerik:RadMenuItem>
                                        <telerik:RadMenuItem Value="Delete" Text="Delete"></telerik:RadMenuItem>
                                        <telerik:RadMenuItem Value="Add Hyperlink" Text="Add Hyperlink"></telerik:RadMenuItem>
                                        <telerik:RadMenuItem Value="Alphabetize Resources" Text="Alphabetize Resources"></telerik:RadMenuItem>
                                        <telerik:RadMenuItem Value="Featured" Text="Make Final Output" Visible="False"></telerik:RadMenuItem>
                                    </Items>
                                </telerik:RadTreeViewContextMenu>
                            </ContextMenus>
                        </telerik:RadTreeView> 

function onNodeMouseOverResourceTree(sender, args) {
            //gets the node upon mousing over the node
            currentNode = args.get_node();
            currentTree = "resourceTree";

            if (currentNode.get_level() == 1) {
                $get("<%=ResourceToolTip.ClientID%>").value = currentNode.get_value();
                showToolTip(sender._element);
            }
        }

        function showToolTip(element) {
            var tooltipManager = $find("<%=RadTooltipManager1.ClientID%>");
            //If the user hovers the image before the page has loaded, there is no manager created  
            if (!tooltipManager) return;
            //Find the tooltip for this element if it has been created   
            var tooltip = tooltipManager.getToolTipByElement(element);
            //Create a tooltip if no tooltip exists for such element  
            if (!tooltip) {
                tooltip = tooltipManager.createToolTip(element);
            }
            tooltip.show();
        }

 

 Code behind:

 //this gets called on page load

            foreach (var resource in resources)
            {
                //build new node
                var node = new RadTreeNode(resource.Title, resource.ResourceID.ToString());
                node.ImageUrl = "/ImageResize.aspx?img=" + resource.FileIcon + "&h=16&w=16";
                node.Attributes.Add("ResourceFileID", resource.ResourceFileID.ToString());
                node.Attributes["id"] = Guid.NewGuid().ToString();

                RadTooltipManager1.TargetControls.Add(node.Attributes["id"], node.Value, true);

                if (resource.IsFeatured)
                {
                    node.BackColor = ColorTranslator.FromHtml("#EE7026");
                }
                else
                {
                    node.BackColor = Color.White;
                }

                //add new node tree
                nodes.Add(node);

 

//and this is the ajax update

 

protected void RadTooltipManager1_AjaxUpdate(object sender, ToolTipUpdateEventArgs e)
        {
            try
            {
                var resource = new Resource(SQLData.GetDBInt(ResourceToolTip.Value));

                Label lbl = new Label();
                lbl.ID = "lblResourceToolTip";
                if (resource.ResourceFileID > 0)
                    lbl.Text = resource.ResourceFile.FileName;
                else
                {
                    lbl.Text = Path.GetFileName(resource.URLToFile);
                }

                e.UpdatePanel.ContentTemplateContainer.Controls.Add(lbl);
            }
            catch
            {
            }
        }

 

 

So everything mostly works however when I quickly hover over a list of nodes it will start firing invalid viewstate errors - though it seems generally to continue to work - any way "I can avoid these viewstate errors? I'm thinking it's just firing too many ajax postbacks too fast when you run your mouse over multiple nodes at once - I've considered switching to the web service method for doing this but figured I'd see if there was a simple solution. Also, I don't necessarily need this to be dynamic but when I tried to use the tooltipify set to true and load each node.tooltip value on page load it does not work for me. Thanks