Questions on UI for ASP.NET AJAX Forum

0 answers

192 views

Radgrid edit mode - Object reference not set to an instance of an object.

Hi All,

I have a radnumerictextbox within a grid. When this value is changed in edit mode, i want to perform some calculations.

I keep getting object reference not set to a instance on this line as well as the one after that.

famIncome = Convert.ToDouble(((RadNumericTextBox)dataItem.FindControl("rntxtAnnualIncome")).Value );

Not sure what i am missing here.

Let me know how to get those values.

protected void rntxtAnnualIncome_TextChanged(object sender, EventArgs e)

{

foreach (GridDataItem dataItem in rg_ProgramApp.EditItems )

{

double famIncome;

int famMembers;

famIncome = Convert.ToDouble(((RadNumericTextBox)dataItem.FindControl("rntxtAnnualIncome")).Value );

famMembers = Convert.ToInt32(((RadNumericTextBox)dataItem.FindControl("rntxtFamilymembers")).Text);

}

<telerik:GridTemplateColumn UniqueName="FamilyMembers" HeaderText="FamilyMembers">

<ItemTemplate>

<asp:Label runat="server" ID="lblFamilyMembers" Text='<%# Bind("FamilyMembers") %>'></asp:Label>

</ItemTemplate>

<EditItemTemplate>

<telerik:RadNumericTextBox runat="server" ID="rntxtFamilymembers" DbValue='<%# Bind("FamilyMembers") %>'

MaxValue="20" NumberFormat-DecimalDigits="0" ></telerik:RadNumericTextBox>

</EditItemTemplate>

</telerik:GridTemplateColumn>

<telerik:GridTemplateColumn UniqueName="AnnualIncome" HeaderText="Annual Income">

<ItemTemplate>

<asp:Label runat="server" ID="lblAnnualIncome" Text='<%# Bind("AnnualIncome") %>'></asp:Label>

</ItemTemplate>

<EditItemTemplate>

<telerik:RadNumericTextBox runat="server" ID="rntxtAnnualIncome" Value='<%# Bind("AnnualIncome") %>'

Type="Currency" NumberFormat-DecimalDigits="2" OnTextChanged="rntxtAnnualIncome_TextChanged" AutoPostBack="true" ></telerik:RadNumericTextBox>

</EditItemTemplate>

</telerik:GridTemplateColumn>

Thanks in Advance

Grid

asked on 06 Feb 2017

0 answers

96 views

How to keep values in Text box and Drop Down box when validation fails

I have a radgrid that uses Add New Record to enter data, then uses the server side validation to make sure that the User Id field is not duplicated in the database. When the server side validation fails, I display a message why the insert failed. To keep the insert mode, I use e.Canceled but values are lost.
I can't figure out how to keep the values in the textboxes after the server validation fails so the user won't have to retype everything.

Thanks in advance.

Grid

asked on 06 Feb 2017

3 answers

232 views

Export grid to Excel Biff - set borders

Hi,

I'm exporting my grid to Excel in Biff method.

I ssucessfully added background colors to the headers but I don't get to set borders on the cells of the excel export.

How can I achieve this ?

Grid

answered on 06 Feb 2017

0 answers

116 views

How to use Progress Bar instead of busy indicator on Radgrid

Hi

I want to show progressbar on radgrid while loading data, in need data source function data loading sql query contain brings a lot of data so i want to show progress of loading process instead of simply showing busy indicator with RadLaodingPanel. Is there any way we can do this ?

Regards,

Zain

Grid

asked on 06 Feb 2017

0 answers

85 views

Get radGrid column text in other language in code behind

I have a radGrid in which one column has some text in English language. Now I have implemented google translation on my website and I have changed the language of my website by google translation to other language.

But when I try to get that column data from code behind in selected language it won’t work, I get the text in English language.

How can I get the content in selected language in code behind?

Grid

asked on 06 Feb 2017

0 answers

63 views

Filtering in radGrid

Hello

Could You help me How can I get correct currentpageindex and Itemindex after filtering?

When I filter Grid column my Itemindex and currentpageindex Missed.

Thanks for your help

Grid

asked on 05 Feb 2017

15 answers

727 views

[Solved] Dynamically generate a hyperlink when attachment is loaded

Hi,
I have a radGrid with an attachment column visible only in form edit mode. The attachment is saved in a folder not in the db.
I would like to generate an hyperlink when an attachment is loaded and place it somewhere in the edit form of the record so that the user can simply click on the link and visualize the attachment.
The user may load more than one attachment so every time a new one is loaded, a new link should be generated.
How can I do something like that? I am completely lost on this one!

I think I should set the DataNavigateUrlFields of the dynamically generated attachmentcolumn to the path/filename of the new loaded/selected file. But I do not know how to get such url.
Moreover how do I generate dynamically a new column every time I load a new file pointing to such url?

Thanks

Grid

answered on 04 Feb 2017

0 answers

202 views

Custom Validator for textbox does not fire on lost focus but on Insert button click in Add New Record mode for a RadGrid

1. I am trying to add validate a textbox with Custom Validator in the Add New Record mode for a radgrid. The server validate method is called on Insert button click rather than lost focus for the textbox.

2. I want to keep the radgrid in insert mode if validation fails. e.Canceled = true keeps the grid in Insert mode but the user entered values are lost. How can I keep the user entered values in the insert mode if custom validation fails?

Thanks

Grid

asked on 04 Feb 2017

1 answer

132 views

Updating ObjectDataSource With RadComboBox and Multiple Selected Items

I have an ObjectDataSource bound to my Grid, and the Automatic Updating works fine for all controls except for the RadComboBox in one of my columns as I'm not sure how to bind to it. In my ObjectDataSource, the values that are selected from the RadComboBox are stored in a List. In a regular ListView, I would just grab the selected values and put them in a List and assign them to e.NewValues() in the ListView's ItemUpdating event. I can't seem to figure out how to do something similar in the Grid's UpdateCommand event. Below is some abbreviated code to show what I'm trying to do. Appreciate any help you can offer.

Public Class MyCase

Public Sub New()

End Sub

Private intId As Nullable(Of Integer)

Public Property Id() As Nullable(Of Integer)

Get

Return intId

End Get

Set(ByVal value As Nullable(Of Integer))

intId = value

End Set

End Property

Private strCaseName As String

Public Property CaseName() As String

Get

Return strCaseName

End Get

Set(ByVal value As String)

strCaseName = value

End Set

End Property

Private objCodes As List(Of MyCode) = New List(Of MyCode)

Public Property CodeList() As List(Of MyCode)

Get

Return objCodes

End Get

Set(ByVal value As List(Of MyCode))

objCodes = value

End Set

End Property

End Class

Public Class MyCode

Public Sub New()

End Sub

Private intId As Nullable(Of Integer)

Public Property Id() As Nullable(Of Integer)

Get

Return intId

End Get

Set(ByVal value As Nullable(Of Integer))

intId = value

End Set

End Property

Private strName As String

Public Property Name() As String

Get

Return strName

End Get

Set(ByVal value As String)

strName = value

End Set

End Property

End Class

Protected Sub gridCases_UpdateCommand(sender As Object, e As GridCommandEventArgs)

End Sub

<telerik:RadGrid RenderMode="Lightweight" runat="server" ID="gridCases" AutoGenerateColumns="false" AllowPaging="true" DataSourceID="odsCases" AllowSorting="true" OnUpdateCommand="gridCases_UpdateCommand" AllowAutomaticUpdates="true">

<MasterTableView DataSourceID="odsCases" DataKeyNames="Id" CommandItemDisplay="Top" InsertItemPageIndexAction="ShowItemOnCurrentPage" EditMode="InPlace" CommandItemSettings-ShowRefreshButton="false">

<Columns>

<telerik:GridBoundColumn DataField="Id" ReadOnly="true" ForceExtractValue="Always" Visible="false" />

<telerik:GridBoundColumn DataField="CaseName"></telerik:GridBoundColumn>

<telerik:GridTemplateColumn HeaderText="Codes">

<ItemTemplate>

<%#DataBinder.Eval(Container.DataItem, "Codes").ToString%>

</ItemTemplate>

<EditItemTemplate>

<telerik:RadComboBox RenderMode="Lightweight" ID="ddlCodes" runat="server" CheckBoxes="true" DataSourceID="odsCodes" DataTextField="Name"

DataValueField="Id">

</telerik:RadComboBox>

</EditItemTemplate>

</telerik:GridTemplateColumn>

<telerik:GridEditCommandColumn></telerik:GridEditCommandColumn>

</Columns>

</MasterTableView>

<PagerStyle Mode="NextPrevAndNumeric" />

</telerik:RadGrid>

<asp:ObjectDataSource ID="odsCases" runat="server" TypeName="MyCaseManager" DataObjectTypeName="MyCase" SelectMethod="GetList" UpdateMethod="Save">

</asp:ObjectDataSource>

<asp:ObjectDataSource ID="odsCodes" runat="server" DataObjectTypeName="MyCode" SelectMethod="GetCachedList" TypeName="MyCodeManager">

</asp:ObjectDataSource>

Grid

answered on 03 Feb 2017

7 answers

129 views

Cascading cell choices

I have a RadGrid in Batch Edit mode with three drop down columns (I have tried this with both GridDropDownColumn and GridTemplateColumn containing a DropDownList control). The problem is that I need to populate each subsequent column based on what is selected in the previous one.

For example, if the first column has options A, B and C, and the user picks A, the second column is populated with D and E. If the user picks B, the second column is populated with F, G and H. And if the user picks A is the first column, and E in the second column, the third column is populated with I, J, K and L.

The datasource for the RadGrid is a List<class> structure where each row is an instance of the class. The class contains the selected value and options for the first dropdownlist. When the value of the first column is set in the class, the class setter for it updates the option values used in the second column and if the current second column value is no longer an option, sets it to the first entry in the second column options. Once the second column is set, the same thing happens for the third column's value and options. Therefore, each row could have different values for the second and third dropdownlists based on what is selected in the first dropdownlist of each row.

Can I do this in Batch Edit mode or do I have to do something like InPlace mode instead? I prefer the user experience in Batch Edit mode, but JavaScript is not my strong point. Using the pre-render event (either RadGrid's when I use GridDropDownColumns or the DropDownList control's when I use a template column), I can easily populate the first column with the right options, but I am having trouble populating and setting values in the subsequent columns.

Grid

answered on 03 Feb 2017