or
13 answers
548 views
I am binding a radgrid to a dataset using NeedDataSource with AutoGenerateColumns set to true. I am using the following code to get Multi-Column Headers. On first load the code executes fine, but on post back it gives an error(pasted below).
The error is happening in RadGrid_ColumnCreated. When I try to access column, it is null.
In Page Load:
if (!IsPostBack) { GridColumnGroup columnGroup = new GridColumnGroup(); columnGroup.HeaderText = "Parent Header"; columnGroup.Name = "ParentHeader"; RadGridControl.MasterTableView.ColumnGroups.Add(columnGroup); }In RadGrid_ColumnCreated:
GridBoundColumn column = e.Column as GridBoundColumn; string columnName = column.HeaderText; //--------------> Error happens here on postback. if (columnName.Contains("Name")) { GridBoundColumn boundColumn = e.Column as GridBoundColumn; boundColumn.ColumnGroupName = "ParentHeader"; }Error:
Invalid column name:
Description: An unhandled exception occurred during the execution of the current web request. Please review the stack trace for more information about the error and where it originated in the code.
Exception Details: System.Exception: Invalid column name:
Source Error:
An unhandled exception was generated during the execution of the current web request. Information regarding the origin and location of the exception can be identified using the exception stack trace below.
Stack Trace:
[Exception: Invalid column name: ]
Telerik.Web.UI.GridTableView.
Telerik.Web.UI.GridTableView.
Telerik.Web.UI.GridTableView.
System.Web.UI.WebControls.
System.Web.UI.Control.
Telerik.Web.UI.
System.Web.UI.Control.
System.Web.UI.Control.
System.Web.UI.Control.
System.Web.UI.Control.
System.Web.UI.Control.
System.Web.UI.Control.
System.Web.UI.Control.
System.Web.UI.Control.
System.Web.UI.Control.
System.Web.UI.Control.
System.Web.UI.Control.
System.Web.UI.Control.
System.Web.UI.Control.
System.Web.UI.Control.
System.Web.UI.Control.
System.Web.UI.Control.
System.Web.UI.Control.
System.Web.UI.Control.
System.Web.UI.Page.
System.Web.UI.Page.
0 answers
125 views
Is the Update Grid Command just the new version of the UpdateEdited Command? I just noticed that updating one of our grids was sending "Update" as the command, instead of "UpdateEdited"... I just saw "Update" mentioned in the current documentation, so I thought I should ask here.
1 answer
378 views
I would like to have a single textbox outside the grid, and if the user types for example "ABC" all rows that on a column they have a value ABC would be displayed.
Peter Milchev
Telerik team
answered
on
14 Jul 2017
1 answer
599 views
I have a RadGrid displaying data from a SQL DB in which the datetime is UTC.
I would like for the RadGrid to automatically change this datetime so it matches the client's timezone.
How can that be achieved?
Peter Milchev
Telerik team
answered
on
14 Jul 2017
5 answers
145 views
Hello,
One of the outputs for our RadEditor generated content is html reports. We need the ability to convert Symbols to html markup. Please see the example below for copyright symbol. Is there a conversion chart for RadEditor supported symbols and their html markup anywhere?
One of the outputs for our RadEditor generated content is html reports. We need the ability to convert Symbols to html markup. Please see the example below for copyright symbol. Is there a conversion chart for RadEditor supported symbols and their html markup anywhere?
® = ®
0 answers
132 views
I want to have a page with about a dozen different HtmlCharts on it, and I want them to all load their data in from a WebAPI controller.
I wanted to do this simply because if I have 12 different charts/graphs, I don't want end-users to have to sit and wait for the PageLoad event to gather and parse through tons of data. I'm hoping to just define all the charts on my webform and then tell jquery/javascript to grab the data and bind them asynchronously, letting them "appear" as they complete-- knowing that some charts will render much slower than others. I want people to be able to see each chart as they finish rendering rather than waiting for the whole lot to finish. I also don't want to just do them "1 by 1" synchronously.
Is this possible or am I going down the wrong path? I didn't see any examples, only something about using WCF which I'm not super familiar with.
I wanted to do this simply because if I have 12 different charts/graphs, I don't want end-users to have to sit and wait for the PageLoad event to gather and parse through tons of data. I'm hoping to just define all the charts on my webform and then tell jquery/javascript to grab the data and bind them asynchronously, letting them "appear" as they complete-- knowing that some charts will render much slower than others. I want people to be able to see each chart as they finish rendering rather than waiting for the whole lot to finish. I also don't want to just do them "1 by 1" synchronously.
Is this possible or am I going down the wrong path? I didn't see any examples, only something about using WCF which I'm not super familiar with.
Alex
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Rank 1
Rank 1
asked
on
13 Jul 2017
1 answer
113 views
Hello,
I am working with a RadSearchBox and I would be interested in displaying a list with suggestions triggered from server side, just like when user types in RadSearchBox, but triggered from server instead. The idea is user search triggers a process that populates my database and when process is done, I would like to display the list of suggestions that would match the original search with actual data. Is there any way?
Thank you in advance.
Peter Milchev
Telerik team
answered
on
13 Jul 2017
2 answers
226 views
Hello,
I have added One Custom Task Field 'SrNo' as object datatype with respect to demo project given here. I have not used EntityFramework. I am Binding RadGantt's Datasource and DependenciesDataSource simply on Page_Load Event.
To add new Task Field below is the code I have written
public class CustomGanttTaskFactory : ITaskFactory { Task ITaskFactory.CreateTask() { return new CustomTask(); } } public class CustomTask : Task { public CustomTask() : base() { } public object SrNo { get { return (object)(ViewState["SrNo"] ?? ""); } set { ViewState["SrNo"] = value; } } protected override IDictionary<string, object> GetSerializationData() { var dict = base.GetSerializationData(); dict["SrNo"] = SrNo; return dict; } public override void LoadFromDictionary(System.Collections.IDictionary values) { base.LoadFromDictionary(values); SrNo = values["SrNo"]; } }Page_Load Event:
protected void Page_Load(object sender, EventArgs e) { List<ITask> newFinalTask = new List<ITask>(); List<IDependency> FinalDependency = new List<IDependency>(); newFinalTask.Add(new CustomTask { ID = 1, SrNo = "1", OrderID = 1, ParentID = null, Title = "A", Start = new DateTime(2015, 01, 10, 0, 0, 0), End = new DateTime(2015, 01, 19, 23, 59, 59), PercentComplete = 0.60M, Expanded = false, Summary = true }); newFinalTask.Add(new CustomTask { ID = 2, SrNo = "", OrderID = 2, ParentID = 1, Title = "A1", Start = new DateTime(2015, 01, 10, 0, 0, 0), End = new DateTime(2015, 01, 15, 23, 59, 59), PercentComplete = 0.60M, Expanded = false }); newFinalTask.Add(new CustomTask { ID = 3, SrNo = "", OrderID = 3, ParentID = 1, Title = "A2", Start = new DateTime(2015, 01, 16, 0, 0, 0), End = new DateTime(2015, 01, 19, 23, 59, 59), PercentComplete = 0.60M, Expanded = false }); newFinalTask.Add(new CustomTask { ID = 4, SrNo = "2", OrderID = 4, ParentID = null, Title = "B", Start = new DateTime(2015, 01, 20, 0, 0, 0), End = new DateTime(2015, 01, 31, 23, 59, 59), PercentComplete = 0.60M, Expanded = false, Summary = true }); newFinalTask.Add(new CustomTask { ID = 5, SrNo = "", OrderID = 5, ParentID = 4, Title = "B1", Start = new DateTime(2015, 01, 20, 0, 0, 0), End = new DateTime(2015, 01, 31, 23, 59, 59), PercentComplete = 0.60M, Expanded = false }); FinalDependency.Add(new Dependency { ID = 1, PredecessorID = 1 ,SuccessorID = 4, Type = DependencyType.FinishStart }); RadGantt1.DataSource = newFinalTask; RadGantt1.DependenciesDataSource = FinalDependency; }
Design Page:
<telerik:RadGantt runat="server" ID="RadGantt1" Enabled="true" ReadOnly="True" AllowSorting="False"> <DataBindings> <TasksDataBindings IdField="ID" TitleField="Title" StartField="Start" EndField="End" PercentCompleteField="PercentComplete" OrderIdField="OrderID" SummaryField="Summary" ParentIdField="ParentID" /> <DependenciesDataBindings IdField="ID" PredecessorIdField="PredecessorID" SuccessorIdField="SuccessorID" TypeField="Type" /> </DataBindings> <CustomTaskFields> <telerik:GanttCustomField PropertyName="SrNo" ClientPropertyName="SrNo"/> </CustomTaskFields> <Columns> <telerik:GanttBoundColumn DataField="ID" HeaderText="ID" AllowEdit="false" AllowSorting="false" Width="50px"></telerik:GanttBoundColumn> <telerik:GanttBoundColumn DataField="SrNo" HeaderText="Sr.No." AllowEdit="false" AllowSorting="false" Width="50px" UniqueName="SrNo"></telerik:GanttBoundColumn> <telerik:GanttBoundColumn DataField="Title" HeaderText="ACTIVITY" AllowEdit="false" AllowSorting="false"></telerik:GanttBoundColumn> <telerik:GanttBoundColumn DataField="Start" HeaderText="START" DataFormatString="dd/MM/yyyy" AllowEdit="false" AllowSorting="false" Width="80px"></telerik:GanttBoundColumn> <telerik:GanttBoundColumn DataField="End" HeaderText="END" DataFormatString="dd/MM/yyyy" AllowEdit="false" AllowSorting="false" Width="80px"></telerik:GanttBoundColumn> <telerik:GanttBoundColumn DataField="PercentComplete" HeaderText="% COMPLETED" AllowEdit="false" AllowSorting="false"></telerik:GanttBoundColumn> </Columns></telerik:RadGantt>But it is not Displaying Data in Sr.No. Field. Below Attached is the output Image.
Please help me with what is wrong with my code.
1 answer
118 views
Hi,
I am trying to implement paging on a RadGrid in a web forms application.
The problem I am having is that when the user selects a page the correct information displays, but then the text '22057|updatePanel|ctl00_MainContent_ctl00_MainContent_grdResultsPanel|'
erroneously appears above the control after which the paging no longer functions. I have attached part of a screenshot so you can see what I'm talking about.
Why is this happening?
ASPX:
<telerik:RadGrid ID="grdResults" runat="server" Width="100%" Height="430px" PageSize="10" ItemStyle-HorizontalAlign="Left" HeaderStyle-HorizontalAlign="Left" OnItemCommand="grdResults_ItemCommand" OnItemDataBound="grdResults_ItemDataBound" AllowPaging="True" AlternatingItemStyle-HorizontalAlign="Left" ItemStyle-BackColor="#ffffff" AlternatingItemStyle-BackColor="#eeeeee" Visible="true" AutoGenerateColumns="false" OnNeedDataSource="grdResults_NeedDataSource"> <MasterTableView TableLayout="Auto"> <NoRecordsTemplate> <div style="padding: 8px 0 5px 5px; height: 20px; width: 110%;"> There are currently no candidates that match the selection. </div> </NoRecordsTemplate> <Columns> <telerik:GridTemplateColumn HeaderText="Candidate ID" UniqueName="CandidateID" Visible="false"> <ItemTemplate> <%#Eval("CandidateID")%> </ItemTemplate> </telerik:GridTemplateColumn> <telerik:GridTemplateColumn HeaderText="Prefix" HeaderStyle-Width="35px"> <ItemTemplate> <%#Eval("Prefix")%> </ItemTemplate> </telerik:GridTemplateColumn> <telerik:GridTemplateColumn HeaderText="Forename"> <ItemTemplate> <%#Eval("Forename")%> </ItemTemplate> </telerik:GridTemplateColumn> <telerik:GridTemplateColumn HeaderText="Surname"> <ItemTemplate> <%#Eval("Surname")%> </ItemTemplate> </telerik:GridTemplateColumn> <telerik:GridTemplateColumn HeaderText="MobilePhone"> <ItemTemplate> <%#Eval("MobilePhone")%> </ItemTemplate> </telerik:GridTemplateColumn> </Columns> </MasterTableView> <ClientSettings> <Scrolling AllowScroll="True" UseStaticHeaders="True" SaveScrollPosition="true"></Scrolling> </ClientSettings> </telerik:RadGrid>
Please ask if you need further information.
2 answers
131 views
Hi,
Version 2017.2.503 says this is fixed: RadButton as Checkbox/Radio checked backgrounds are misplaced in Classic RenderMode.
I'm using 2017.2.621, and it appears it is broken.?
Here's the code:
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"><html xmlns="http://www.w3.org/1999/xhtml"><head runat="server"> <title></title> <style type="text/css"> /* Button Normal */ .btnNormal, .rdDisabled .btnNormal { width: 70px; height: 23px; margin: 0; /*7px 5px 0 0;*/ display: block; float:right; background: url("static2.gif") no-repeat scroll -42px 0 #eeeeee ! important; } /* Button Mouseover */ .btnHovered, .rdDisabled .btnHovered { background-position: -42px -25px ! important; } .btnNormal .rbText { color: #333333; margin: 4px 0 0 ! important; font-family: Verdana, Arial, Segoe UI, Sans-Serif ! important; font-weight: normal ! important; font-size: 11px ! important; } </style></head><body> <form id="form1" runat="server"> <telerik:RadScriptManager ID="RadScriptManager1" runat="server" /> <table class="tblLookup" cellspacing="0" cellpadding="0"> <tr> <td> <telerik:RadRadioButtonList ID="rblLookupBy" runat="server" RenderMode="Classic" AutoPostBack="false" > <Items> <telerik:ButtonListItem Text="Option 1" /> <telerik:ButtonListItem Text="Option 2" Selected="true" /> <telerik:ButtonListItem Text="Option 3" /> </Items> </telerik:RadRadioButtonList> </td> </tr> <tr> <td> <telerik:RadButton ID="btnLookUp" runat="server" Text="Lookup" Image-EnableImageButton="true" Image-IsBackgroundImage="true" CssClass="btnNormal" HoveredCssClass="btnHovered" AutoPostBack="false" /> </td> </tr> </table> </form></body></html>
If I add a RenderMode="Lightweight" or "Auto", etc. Then the radio button list aligns properly, but this causes the RadButton which has enabled images to not display properly. Can you confirm the fix from 2017.2.503 is actually in 2017.2.621, or what else may be wrong.
Thanks,
Dave
Rumen
Telerik team
answered
on
13 Jul 2017
