Data Controls :: Clear Cascading DropDownList Selection When Parent DropDownList Is Changed
Jan 8, 2013
I am having two dropdownlist in my project,one dropdownlist for empid, another dropdownlist for month, if the user select the empid, the values are retrieved in the textbox.
In the second dropdownlist, if the user select the month in the dropdownlist it will display the leave details, its all working fine, if the user again select the first dropdownlist that means empid, I want to show the second dropdownlist as select month, how can do this.....
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Similar Messages:
Aug 12, 2012
i have 3 drop down list in my page
1-ddlzone1
2-ddldistrict1
3-ddlstore1
this is ddlzone1 code
protected void DDLzone1_SelectedIndexChanged(object sender, EventArgs e) {
DDLstore1.Items.Clear();
DDLstore1.Items.Add(new ListItem("select center", ""));
DDLstore1.AppendDataBoundItems = true;
SqlCommand _cmd = new SqlCommand("selectcenter", _cn);
[CODE].....
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Jan 2, 2010
i can populate cascading dropdownlist by using webservice now. but may i know how do i trigger function while selectedindex changed? (without using auto postback...)
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Sep 2, 2012
i have 2 DDL in my page that when users select item from ddldistric1 item in ddlcity1 will change these are my code
protected void DDLcity1_SelectedIndexChanged(object sender, EventArgs e)
{
BindDistrictC();
}
private void BindDistrictC()
[code]...
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Sep 3, 2010
I have 3 cascading dropdownlists. Everything works OK EXCEPT whenever I change the selection in the dropdownlist, the old values from the previous selection are added to the new values (specifically DropDownList id=InstructorList and CourseNumberList)
ASPX page,
<asp:AccessDataSource id="CourseNameSource" Runat="Server" DataFile="r:angel_file_storageCourses.mdb" SelectCommand="SELECT DISTINCT CourseField FROM (SELECT Mid(CourseField, 1, 4) AS CourseField FROM Course_Load) ORDER BY CourseField"/>
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Jan 1, 2010
I know we can set autopostback property of dropdwonlist using javascript or jquery and it will go to action controller specified in Form tag.
[Code]....
but how can we set it to some different action other then what we specified in Form Tag.
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Sep 18, 2010
I am making an application that deals with vehicles. I need two DropDownLists:
Makes: All Vehicle Makes
Models: Models that belong to the selected value of the Make DropDownList
How is this done in MVC2? My Idea: Do I use an ajax call when my first list is selected and then pull back the Models to bind to the Model DDL? How would model binding come into play that way? UPDATE I posted what I ended up doing as an answer. It is super simple and works great. You can use a get too if you feel so inclined, but you have to specify that you want to like so... return Json(citiesList, JsonRequestBehavior.AllowGet);
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Apr 19, 2012
I have 5 dropdown list (sector-country-year-project code-project title) so what i need is when i select specific sector for example education , the rest of the label should show me the only data related to the sector education in dropdown list. the same with other if i select year 2011 should show me in other dropdown list just the data related to year 2011.
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Jan 5, 2013
I have 2 dropdownlist in my page
1--ddlTarde
2--ddlTradeClass
and 2 table in database
1-Trade table
ID Tname
1 Industry
2 Cloth
2-Tradeclass
ID Class Tname
1 Electronic Industry
2 Car Industry
3 Scarf Cloth
4 Pants Cloth
I bind ddlTrade from Tradetable and I want when users click on Item from ddlTrade it bind data from ddlTradeclass that TNAME=ddlTrade.selectedItem in ddltradeClass for this I used below code
for binding ddltrade
BindDropDownList(DDLtrade, "tradename", "Name", "id");
protected void BindDropDownList(DropDownList DDL, string spname, string dataTextfield, string dataValuefield) {
SqlCommand _cmd = new SqlCommand(spname, _cn);
_cmd.CommandType = CommandType.StoredProcedure;
_cn.Open();
SqlDataReader _dr = _cmd.ExecuteReader();
[Code] ....
NOW my problem is that when I select Item from ddlTrade it didn't show any thing in ddlTradeClass but when I delete this code
DDL.DataValueField=dataValuefield;
from BindDropDownList Metod and change like below:
protected void BindDropDownList(DropDownList DDL, string spname, string dataTextfield)
{
SqlCommand _cmd = new SqlCommand(spname, _cn);
_cmd.CommandType = CommandType.StoredProcedure;
_cn.Open();
[Code] ....
It worked correctly I mean when I click Item from ddlTrade in ddlTradeClass show data from TradeClass Table
so here what should I do ? I need DataValueField in ddlbinding ... Why this problem happen?
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Nov 5, 2013
GRADING: EXCELLENT VERY GOOD GOOD FAIR POOR
To what extent equipment efficiency is user friendly Dropdownlist1 Value for course Fees Dropdownlist2 Decision to chosen HIMT Dropdownlist3
In the above dropdownlist when i select the Poor from any of the dropdownlist, popup screen will open in that one textbox is there reason for poor will type. Then I have one ok button and click that button. When I select the any dropdownlist from the above, commonly one popup will be open if we select the above dropdownlist in that popup screen one textbox is there reason for pooor will type.
My question is how do you know which dropdownlist is selected and give the reasonf for poor. For that how can i do in asp.net.
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Mar 16, 2011
I have 2 dropdownlists and on change 1st dropdownlist (ddlPlant), the 2nd dropdownlist (ddlCategoryName) refreshes its data based on 1st dropdownlist value. However, the codes does not worked.
My codes:
[Code]....
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Mar 2, 2010
I have created two dropdown lists. The 2nd DDL depends for values on the 1st DDL. I have written code on the SelectedIndexChanged event of 1st DDL to change values of 2nd DDL. also i have used detailsview. In the template field i have used 2 DDL mentioned above. they are having SelectedValue='<%# Bind("") %>' property. Everything works fine but when i tried to edit record in detailsview & select value from 1st DDL then it gives me following error.
Server Error in '/' Application. Databinding methods such as Eval(), XPath(), and Bind() can only be used in the context of a databound control. 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.InvalidOperationException: Databinding methods such as Eval(), XPath(), and Bind() can only be used in the context of a databound control.
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Feb 9, 2011
I have an ASP.NET/C# web project that uses an Entity Data Model and Entity Framework to interact with my database. I also have a DetailsView control that will serve as the control used to insert a new record. The user will need to be able to select from multiple,
cascading dropdownlist controls to determine what parent record this new record will belong to. Here is an example.Say we have an online ordering system with the following hierarchy.
Customers -> Orders -> OrderParts -> Parts
We're going to add a new part to an order, under a customer. Ultimately the orderparts table won't have a reference to a customer, just an order. The order will have the reference to the customer. In the DetailsView for the new orderparts record we will need two cascading dropdownlist controls. One for customer and one for order, since we won't want to view some crazy amount of orders all in one dropdownlist.
However, the customer dropdownlist should not be bound to the detailsview control since there is no field for it. I also don't want to use the AJAX control since I don't want to create a separate web service to provide all of this information to the dropdownlist controls.
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Jun 16, 2015
I have question how can make cascading dropdownlist in gridview edit mode
the first dropdown is for departments and second is for classes
the primary table to be updated is employees table
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Sep 6, 2012
protected void DDLzone1_SelectedIndexChanged(object sender, EventArgs e)
{
BindDistrict();
}
[Code]......
here when i click on ALL item from ddlzone1 it just "ALL" item in ddldistrict
i want when i select "ALL" item from ddlzone1 in ddldistrict14 show all data from database
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Nov 21, 2012
is there any easy way to add city names,state names,and country names in dropdownlist..
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May 7, 2015
I have two dropdownlists inside a repeater. And based on the value I pick in the first dropdownlist the second needs to get populated (both need to be populated from the DB via stored proc). I am adding the code I have so far but it's not complete
<asp:Repeater ID="rpt" runat="server" OnItemDataBound="rpt_ItemDataBound">
<ItemTemplate>
<tr>
[Code].....
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Dec 23, 2013
How do I fill ProductNameID on selection of ProductCategoryID dropdown by passing
ProductCategoryID .SelectedValue...
aspx Code
<asp:GridView ID="gridPosition" runat="server" AutoGenerateColumns="False" ShowFooter="True" OnRowDataBound="gridPosition_onRowDataBound"
DataKeyNames="SaleDetailID" OnRowEditing="gridPosition_RowEditing"
OnRowCancelingEdit="gridPosition_RowCancelingEdit" OnRowUpdating="gridPosition_RowUpdating"
OnRowDeleting="gridPosition_RowDeleting" ShowHeaderWhenEmpty="True" CssClass="manage-admin"
Width="500px" GridLines="None">
[Code] .....
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Aug 1, 2013
I have a dropdownlist on my page with dates such as 1/1/2013, 2/1/2013, etc.
Then there is a second ddl.
If the date in ddl #1 is before 1/10/2013 I want to enable ddl #2.
If the date in ddl #1 is on or after 1/10/2013 I want to either disable ddl #2 or hide it (whichever's easier).
Disabling ddl #2 based on the selected date is a new requirement so I am enhancing the existing code. Obviously I want to do this without a postback, but I don't know what is the best way. I am trying to understand what an AsyncPostBackTrigger is because this is the existing code:
Code:
<asp:UpdatePanel ID="UpdatePanel1" runat="server">
<ContentTemplate>
<asp:dropdownlist id="EffectiveDateDropDown" runat="server"></asp:dropdownlist>
</ContentTemplate>
<Triggers>
<asp:AsyncPostBackTrigger ControlID="QuoteType"
EventName="SelectedIndexChanged" />
</Triggers>
</asp:UpdatePanel>
It wants to do something when the selected index is changed? This exists in the code-behind, but I set a breakpoint and never hit it:
Code:
protected void QuoteType_SelectedIndexChanged(object sender, EventArgs e)
{
try
{
}
catch (Exception err)
{
this.PublishError(err);
}
}
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Jun 14, 2010
I wanted to create a dropdownlist that would trigger an asynchronous postback and update the Gridview inside the Updatepanel. However, no matter what I do, when the dropdownlist changes, nothing in the UpdatePanel will change, even the TestLabel....I've been banging my head against the walls for days on this -- why won't this work? When I remove the UpdatePanel code and triggers, all the code works, eg, you change the dropdownlist andthen gridview updates -- but it refreshes the page and this is why I wanted to put the Gridview inside an Updatepanel to make it look cleaner.[Code]....
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Mar 9, 2013
<asp:DropDownList ID="ddlday" Width="100px" runat="server" CssClass="iselect" Autopostback="True"
AppendDataBoundItems ="true">
<asp:ListItem Text="--Select--" Value="0" />
<asp:ListItem Text="Full" Value="1" Selected="True" />
<asp:ListItem Text="Half" Value="2" />
</asp:DropDownList>
I have a dropdown in gridview. I bind the gridview after not ispostback condition. Now if i select drodown lsit value "Full" from the first row of gridview i need all other rows of dropdown in gridview to be selected "full" programtically and after that if the user wants to change other row dropdown to "half" then he can change it.
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Sep 20, 2012
Using four dropdown lists (country, state, city, pincode) in one table. i want to select one after other like based upon the country, states has to be displayed and based upon the states, cities has to be displayed and based upon the cities , pincode has to display.
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May 12, 2010
<asp:DropDownList ID="cboItemsPerPage" runat="server" CssClass="standardComboBox" AutoPostBack="true" EnableViewState="true" OnSelectedIndexChanged="cboItemsPerPage_SelectedIndexChanged">
<asp:ListItem Value="1" Text="1" />
[URL]Initially if I make a selection it will automatically post back and firecboItemsPerPage_SelectedIndexChanged. If I then post back by clicking one of the other buttons on the page, cboItemsPerPage_SelectedIndexChanged will continue to fire, despite the fact that the value has not been changed.I want it to be postback only when selected index is changed, not in every postback
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Jan 5, 2014
I want to create a drop down list, where user can view the code name and the name the code when they click on the drop down list.
But after they choose, only the code is appeared. This is my current coding as for now.
<asp:DropDownList ID="ddlcodetype" runat="server">
<asp:ListItem Selected="True">-</asp:ListItem>
<asp:ListItem>DK Deck</asp:ListItem>
<asp:ListItem>EG Engine</asp:ListItem>
<asp:ListItem>CT Catering</asp:ListItem>
<asp:ListItem>OT Others</asp:ListItem>
</asp:DropDownList>
With this, both my name and the code name are appeared.
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May 7, 2015
How to set textbox value based on dropdownlist in asp.net?
Eg: DropDown Option: * Small
*Medium
If I select Small I need textbox value as 50 and For medium 100 something like this.
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