Child Combo Doesn't Get Populated On Changing Parent Combo On Up/down Key Press While Navigated Through Tab Control
Oct 29, 2010
i have 2 combobox A & B.. the values in B is populated according to selected value in A,, my code works fine when i click combo A and select a item,, the values according to it get populated on combo B. i have written it on the change event...
But when i use tab to navigate and select the items in combo A and change on pressing keyboard down key...the items in combo B is not getting populated with new values.. existing values does not get changed,,, ie change event is not getting fired... how can i manage it in down/up key in keyboard when using tab,,,,
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Similar Messages:
Sep 5, 2010
I have two combo and one button. child combo fill on basis of parent combo key value. click on parent combo value will change on child combo,click on button show those combo selected text.I can do it bellow in my syntax.i use north wind database.
<div>
<dx:ASPxComboBox ID="ASPxComboBoxParent" runat="server" AutoPostBack="True" OnSelectedIndexChanged="ASPxComboBoxParent_SelectedIndexChanged"
TextField="ShipName" ValueField="OrderID" ValueType="System.Int32">
</dx:ASPxComboBox>
<dx:ASPxComboBox ID="ASPxComboBoxChild" runat="server" TextField="ProductID" ValueField="OrderID"
ValueType="System.Int32">
</dx:ASPxComboBox>
<dx:ASPxButton ID="ASPxButton1" runat="server" OnClick="ASPxButton1_Click" Text="ASPxButton">
</dx:ASPxButton>
<dx:ASPxLabel ID="ASPxLabelMessage" runat="server">
</dx:ASPxLabel>
</div>
C# syntax
protected void Page_Load(object sender, EventArgs e)
{
if (!this.IsPostBack)
{
NorthwindDataContext db=new NorthwindDataContext();
var r=from p in db.Orders
select p;
ASPxComboBoxParent.DataSource = r;
ASPxComboBoxParent.DataBind();
}
}
protected void ASPxComboBoxParent_SelectedIndexChanged(object sender, EventArgs e)
{
NorthwindDataContext db=new NorthwindDataContext();
int a= Convert.ToInt32( ASPxComboBoxParent.SelectedItem.Value);
var r = from p in db.Order_Details
where p.OrderID == a
select p;
ASPxComboBoxChild.DataSource = r;
ASPxComboBoxChild.DataBind();
ASPxComboBoxChild.SelectedIndex = 1;
}
protected void ASPxButton1_Click(object sender, EventArgs e)
{
ASPxLabelMessage.Text = "Parent is" + Convert.ToString(ASPxComboBoxParent.SelectedItem.Text) + "And child is" + Convert.ToString(ASPxComboBoxChild.SelectedItem.Text);
}
After click the parent combo,child combo fill But click on button always get child combo index=0 value event i change the child combo value .Why not value change on button event?
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Nov 23, 2010
I have used a webservice to populate a Rad Combo Box, when the page is loaded, I need the ability to display the DataTextField, based on the returned DataValueField item
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May 24, 2010
I'm very new to xml so I hope I'm not asking any silly question here. I'm currently working on populating a treeview from an XML file that is not hierarchically structured. In the xml file that I was given the child and parent nodes are defined within the attributes of the item element. How would I be able to utilize the attributes in order for the treeview to populate in the right hierarchical order. (Example Mary Jane should be a child node of Peter Smith). At present all names are under one another.root
<item parent_id="0" id="1"><content><name>Peter Smith</name></content></item>
<item parent_id="1" id="2"><content><name>Mary Jane</name></content></item>
<item parent_id="1" id="7"><content><name>Lucy Lu</name></content></item>
<item parent_id="2" id="3"><content><name>Informatics Team</name></content></item>
<item parent_id="3" id="4"><content><name>Sandy Chu</name></content></item>
<item parent_id="4" id="5"><content><name>John Smith</name></content></item>
<item parent_id="5" id="6"><content><name>Jane Smith</name></content></item>
/root
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Jan 24, 2011
have a formview tied to a gridview and uses entity datasource. THe formview is used for editing the record selected in the gridview and for inserting records. The code is now in an asp page. I want to create a user control for this. I am new to usercontrols.
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Sep 6, 2010
I have Two Combobox where second one is depend upon first one.Means when the selectedindexchanged event of First Combobox fires then the second Combobox will be enabled.
After Event ApplyThe second Combobox is loaded but i couldnot select the ComboBox Value How will i select the value??
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Jun 14, 2010
I have a combo box that looks great in the designer, the list of choices are perfect. But when I view the ASP code, or the published webpage the choices are seriously garbled. I have tried adding items, but it does not seem to regenerate the code. Any ideas why it happened and what I should do? I do most of my editing through the designer GUI. Note the blank items and even items mixed up together: TVCricket
asp Code:
<asp:DropDownList ID="ddlFoundOut" runat="server"> <asp:ListItem Selected="True">(Pick how you found out about us)</asp:ListItem> <asp:ListItem>Another Store</asp:ListItem> <asp:ListItem>Banner at Arena</asp:ListItem> <asp:ListItem>TVCricket</asp:ListItem> <asp:ListItem>West NewsmagazineClear</asp:ListItem> <asp:ListItem>Driving By</asp:ListItem> <asp:ListItem>Friend/Co-worker</asp:ListItem> <asp:ListItem>Internet</asp:ListItem> <asp:ListItem>Mall Sign</asp:ListItem> <asp:ListItem>Online Phone Book</asp:ListItem> <asp:ListItem>Phonebook (paper)</asp:ListItem> <asp:ListItem>Radio</asp:ListItem> <asp:ListItem></asp:ListItem> <asp:ListItem></asp:ListItem> <asp:ListItem>Other</asp:ListItem> <asp:ListItem>Other Magazine</asp:ListItem> <asp:ListItem>Other News Paper</asp:ListItem></asp:DropDownList>
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Aug 19, 2010
i want to put date into 2 combo box combo1 = date, and combo2= month
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Jan 10, 2011
I have used the database data to combo box values. But the problem is i don't now how to avoid the duplicate data. for e.g In a single column name called "department " is used so many time but i wanted it only one time should be displayed the combo box.
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Feb 23, 2011
I want masked ComboBox, so I use a MaskedEditExtenderwith a ComboBox. The two controls came from the ajax control toolkit. But I got an error: "Unable to cast object of type 'AjaxControlToolkit.ComboBox' to type 'System.Web.UI.WebControls.TextBox'". Is there a way a can use a MaskedEditExtender with a combo box?
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Jan 26, 2010
I want get timezone list to combo box. How can i get timezone list?
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Jul 21, 2010
*i work on northwind database .*In my AspxGridview i want to show comboBox.I fill grid on back end C#.i also want my combo will fill back end.
<dxwgv:ASPxGridView ID="ASPxGridView1" runat="server"
AutoGenerateColumns="False" KeyFieldName="CategoryID"
oncelleditorinitialize="ASPxGridView1_CellEditorInitialize">[code].....
When i run the code AspxGridview fill well but when i click on Edit or New Command on left side of my grid show me bellow error message ;
**Object reference not set to an instance of an object.**
What's the problem is?How to solve this problem.How to bind cell combo on aspx gridview
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Jan 28, 2011
currently i'm attempting to using a switch statement to change between time zone with a project for school.
if (extTime1.timeZone == "CDT")
{
switch (cboTimeZone.SelectedItem.ToString)
{
case "EST":
[Code]....
I can't seem to get the cboTimeZone to work correctly. I always thought SelectedItem was the correct choice in this situation.
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Feb 9, 2010
i have two radcombobox on my page and i am controling their focus by jquery...also i have some code on their OnClientFocus , therefore focus and blur are so important ...my aspx and jquery code are like this : (without RadComboBox -> OnClientFocus )
<%@ Page Language="C#" AutoEventWireup="true" CodeBehind="WebForm4.aspx.cs" Inherits="Darman.WebForm4" %>
<!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" >[code]....
it seems that radcombo box can not foreget it's focus and stick with that , therefore when i play with 2 buttons (enter=13 and upper key=38 as you see in the upper code - Jquery) For Changing Their Focus so RadComboBox OnClientFocus does not fire until i click on my page and Click On the RadComboBox Again...These Lines do not work:
1-$('input[id$=RadComboBox1_Input]').blur();
2-$('input[id$=RadComboBox2_Input]').blur();
how can i take focus off from radcombo box i destroy it's highlight?
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Oct 12, 2010
Can I provide a Combobox that will EITHER let a user type in a value OR let them select from the dropdown? I am trying to create a scenario where a user can attach a value to an object they are editing. When attaching that value, I want them to be able to type in a completely new value or, select from a list of already-existing values.
When I create the combo box, I add a list item that has text like "Type a value or pick from the list"...this has an index of 0. Then I append the databound values to the list.
A combo box seems like the perfect solution since it combines a text box with a drop down list but, I can not figure out how to retrieve the text that has been typed into the combobox once the form is submitted. cmbMyComboBox.text seems to be the obvious way to do it but, that returns an empty string. If I try to get the SelectedItem.Text then, I get "Type a value or pick from the list" instead of whatever text I typed into the combobox, once it was displayed.
Am I trying to do something that the ComboBox is not meant to do? How can I accomplish this?
I have decided to abandon trying to use the combo box. I am trying to use a dropdown menu in one column, and text boxes in all the others. But, I am having a strange problem with that as well. I will post those problems in the appropriate forum. I marked this post as "No Status" because I didn't see any way to delete it.
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Nov 11, 2010
I'm still struggling with my scenario. I have looked everywhere for a solution and cannot find a solution. I am using C# and ASP.NET and I need to export data to an Excel spreadsheet.
I have a list of applications that contains Application objects. Each Application object has a status ID. When I export these applications to Excel then I need a column with a drop down/combo box in it. In this drop down/combo box should be a list of all the statuses from the database. And then I need the status to be selected to that of the application's status ID.
Another question is also with regards to the above scenario. When the user downloads the Excel document then the user can change the status of each application by selecting a different value in the drop down. I will need to upload this spreadsheet and loop through the rows and get the values of the columns and the value of the selected item in the drop down/combo box. How would you do this? Is this possible?
I may not use COM components, so I tried to go with EPPlus or NPOI (it does not have to be these 2) but it doesn't seem like they support my scenario. How would I be able to achieve my scenario? Once again, it doesn't have to make use of EPPlus and NPOI.
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Sep 4, 2010
When i select or autosuggest in a combo box , i should be able to get the selected value in a text box in the client side using ajax without a postback.
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Mar 23, 2011
m trying fill the combo box from cities database but i wan the metropolitan cities at the top of the selection menu i have used this approach i there any alternative??
[Code]....
and the combo box in designer
<div class="row">
<label>
City :</label>
<ajaxToolkit:ComboBox ID="ddCities" runat="server" AutoPostBack="False"
DropDownStyle="DropDownList"
AutoCompleteMode="SuggestAppend"
CaseSensitive="False"
CssClass=""
ItemInsertLocation="Append" Width="380px"></ajaxToolkit:ComboBox>
am achieving the purpose but it doesn't seems ideal since hard coded and also entries are repeated
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Jan 10, 2010
how to display a tree view control within the combo box in vb.net
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Jan 24, 2011
have a filter on the page and i am using 5 combo boxes. The data in the combo box is getting filled properly. However when i select the drop down of combo box and select any item from the list. I get this error.."Invalid Argument"and the debugger points to style.width = bestWidth + 'px'i tried searching everywhere but no common errors.
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Mar 3, 2010
When i edit a record (the record I am selecting from the gridview control by clicking it) which takes the details from a textboxes and combobox. always the combobox takes the first item from the combo box, it does not take the item which i have selected.
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Feb 19, 2010
i'm using 4 combo boxes for displaying latitude details.the latitude details are degree,minutes,seconds and north/south.when i select the city in combo box the latitude details from sql server (for that city) should be displayed.
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Nov 16, 2010
I have a user control with contact form and validators, when I add it (user control) to my parent page I get a strange behavior of all buttons within the parent page, Any button I press on the parent page fires the validators of the user control. How can I vallidate the form on my user control only when I press a specific button?
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Jul 26, 2010
I have a very typical set up, an ajax update panel is updated when a drop list of offices changes. Each form could have it's own values, for instance each store will have it's own list of employees. Here is where the fun begins. The form can be changed by the drop down (new office) or validated and submitted.
On drop down change, I create a new instance of the same rad combo, bind it to the current data, confirm that the correct data is bound. Then on the return trip I see selected the default user from the previous user. This is a composite control, and firebug shows me that the value for the "text box" that simulates the combo still has the old value. I'm suspecting onViewStateLoaded, but turning viewstate off for the Telerik didn't . II don;t need it anyway, cuz I have to put the selected value in another hidden to make a cross page post on submit.
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Apr 14, 2010
SQL query below: [Code]....
Basically i want to create combo box with multiple columns, I am aware that there is couple different solutions on the web, but I have decided to go for SQL query as I think it does not takes as much resources as Ajax Extender method, or label+GridView method,
Result of the query is:
DELL................Power Vault Ultrium LTO 4
1
Plextor.............PX-810SA
2
Asus................CRW-5232A3
3
Dell................PowerVault 110T LTO2
4
tes.................tes
8
This is test........This is test
As you can see it columns are not in line, I spent hours trying to find the way to "assign static length for SQL Columns".I want to assign 20 chars block for BackupDriveMake, and the same for BackupDriveModel and then combine them under one name using AS option. So if for example if backupmake takes 4 chars it will fill rest with blank spaces.
Example:
DELL
Power Vault Ultrium LTO 4
Plextor
PX-810SA
Asus
CRW-5232A3
Does anyone knows the way to do it in SQL, or maybe there is a way to format bound items in DropdownList in aspx webform.
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