Web Forms :: DropDown Populated From Db Based On Value Of Other Dropdown
Mar 16, 2011
I have dropdown1 that has some items in it.I also have dropdown2 that gets populated from a database based on whatever is selected from dropdown1.Dropdown2 has its first item as "Make Selection" and then appends the data from the db based on what was selected in dropdown1.
Now when I select an item from dropdown1 it puts the correct data in dropdown2 but as soon as I select another item from dropdown1 it appends those values into dropdown2. How can I remove the values from dropdown2 after a new item is selected from dropdown1?
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Mar 4, 2011
I have a gridview where i have two fields. one is product and second is sub category.
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1. I need to populate the two combos from the database. But depending what is selected in dropdown 1 this will determine what needs to be populated in drop down 2?
how can i achieve this?
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Sep 16, 2010
I am a complete newcomer to ASP.NET. However in the few weeks I have been playing with it I have got pretty far and have mastered things like stored procedures, gridviews, formviews and templates.I have a dropdown box which is populated from SQLDataSource1
I have a second dropdown box which is populated from SQLDataSource2, but i need the query feeding this to be dependent on what was selected in the first dropdown box. I assumed it would simply be a case of modifying the select statement on SQLDataSource2 using the SelectedIndexChanged event on the first DropDownList to update the second SQL source, but I cannot work out for the life of me how to do it. Pretty much all of the code I have is ASP.
can i do this purely in ASP rather than using VB behind the scenes or do I need to use VB? I am pretty comfortable with vb.net but one of the other issues I have is referencing an ASP object from VB... so for instance if I had a text box in ASP, how can I read or change the properties of this object from VB?
FYI I am using Visual Studio 2010 and SQL/Server
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Jul 9, 2010
I have a category and a subcategory column in a Jqgrid. I have enabled inline editing, both category and subcategory are dropdownlists columns (edittype:'select'). I need to filter the subcategory list based on the selected category. I wonder how can I acheive this functionlity? I tried the below event but its not working for me
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Oct 22, 2010
how to populate a dropdown list box based on selected value in another.
dropdown list box? Say, for example, the first dropdown is a list of car manufactures. When a user selected a manufacture from that dropdown list, the second dropdown would list would automatically gets populated with all the car models for that manufacture.
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Jan 9, 2011
I am new to MVC, I have a form in which selection of one dropdown should reload another dropdown. On selection of the dropdown, I use a jquery post to get the data and my viewstate is reloaded with new data, but I am not sure how to set the newly loaded viewdata to load the dropdown again.
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Feb 7, 2012
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May 28, 2010
I have a web user control with a dropdown that is populated from a SQL table:
[Code]....and then the .cs
[Code]....
Catalog Access:
[Code]....
I can give the rest of the GenericDataAccess if that will help, but here's the problem; When I run a web page with this control, all the dropdown items are 'System.Data.DataRowView'I'm sure there's some obvious stuff I'm missing but I'm new to populating dropdowns.
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Apr 29, 2010
My dropdown list is populated by a group of names inalphabetical order.
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Nov 3, 2010
How can I get the populated cascaded dropdown value using javascript ?
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Oct 21, 2010
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Sep 8, 2010
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Jun 12, 2010
I Have the gridview control with 2 dropdown list and 2 text boxes,When the textbox chnaged event happen 1 row will create and the dropdown back to initial values( its not retaining the selected values),I am binding the control after text changed method,Is there any properties needs to be set or any other way we can retain the values in postbacks?
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Oct 14, 2010
I have two dropdown linked with sqldatasources.When I select item in ddl1 then on the basis of selection ddl2 is being loaded.Is there any possiblity that if I select ddl2 then ddl1 will also load on the basis of selection?
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Jul 30, 2010
1) I'm currently working for HR application with security roles
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Aug 14, 2010
creating a dropdown similar to the time dropdown in outlook, located in the recurring event. The dropdown shows intervals of 30 minutes based on a 12 hour time format and allows the ability to put text in it.
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Mar 11, 2014
I have seen article in code snippet but i have never used web services so that is complicated .
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Oct 12, 2010
i have over 100 items all loaded in a dropdown list. They all are assigned a value between 1-10 which represent 10 categories. When certain buttons are clicked, i want the dropdown list to display only items with a value "1" or "2", etc.
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Jan 5, 2010
i have a procedure on my page that returns a number, i need to use that number to build a drop down with that many items.Example:Returned Value: 5
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2
3
4
5
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Jun 16, 2010
I am trying to preselect an item in a drop down list box based upon a value I pass in from a data reader. When I place a "Watch" on the drop down list box, the code I am listing below says that it does what it is supposed to and sets the "selected item" to the one I want BUT when the page is rendered and comes up the first item is always selected. It is like it loses the set when the page is loaded or something.
Here is the code....
<td style="width:33%"><asp:Label CssClass="formlabel" ID="lblRU" runat="server" Text="Reporting Unit: "> </asp:Label> <asp:DropDownList ID="ddlRepUnitTeam" runat="server" DataSourceID="SqlDataSource1" DataValueField="MR_LU_TEAMS_PK" DataTextField="MR_LU_TEAMS_NAME"> </asp:DropDownList> </td> <%
For Each item As ListItem In ddlRepUnitTeam.Items
If item.Text = myReader.GetString(0) Then ' ddlRepUnitTeam.Visible = False
item.Selected = True Exit For End If Next %>
For giggles, I add the ".Visible = False" in there as a test and commented it out later. That doesnt work either. The item still is visible. I know the IF statement passes as it enters into the if statement using debug mode and hits the "Exit For" so I know the condition is being met. I am at a loss over this one.
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Jun 11, 2010
I'm having a problem with using a dropdown to filter the contents of another drop down. The basic idea is:
Dropdown 1 = CountryList (Column1)
Dropdown 2 = StateList (Column2)
I read the contents of a CSV file and populate the gridview. The user then visually verifies that the data is valid and proceeds to upload to the database. To do some testing, i have intentionally changed spellings of country names so they DO NOT match the countrylist which the grid view then flags with a different background indicating bad data. The user then edits the gridview. The Country and state columns then show a drop down control populated with the country list and filtered states list based on countryID.
Here's the ASP.NET ASPX Source for the section of code that is dealing with the gridview
[Code]....
Here's the section of VB Code behind that deals with handling the "RowEditing", specifically the binding of the dropdowns
[Code]....
The proglem is that these dropdowns are ment to easily fix minor errors in data. When i intentionally changed the spelling of "Canada" to Canadaa", this has no corresponding CountryID in the table and the ddlEdtStateID Dropdown's datasource filter does not work. I tried setting the datasource to nothing if a valid CountryID was not there and then i tried to use the SelectedIndexChanged event for the ddlEditCountryID to programmatically set the datasourceID for ddlEditStateID but when i try using CType(FindControl("ddlEdtStateID"), DropDownList) to set the DataSourceID, it does not find the control.
If the Country does not exist, then i just want the stateslist dropdown to say "select a country" but when a valid country is selected, it should display the filtered list for that countryID. Right now, if bad data is entered for the country, then the program crashes when it tries to populate the state drop down. I want it to just say, select a country when the countryID is not valid.
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Nov 12, 2010
I have a table that has 3 columns, ID NAME DESCRIPTION at the moment, i have a drop down binded to name(bring back a list of names) simple enough!
now i want to put a label next to the drop down so that what ever is selected , it would show a label description next to it...
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Jan 13, 2014
I am trying to display results based on both dropdown list selection.If a user selects Jan from 1st ddl and 2013 from 2ns ddl then results of Jan 2013 will be displayed to the user,everything works fine,I wanted to confirm the query that I have used is correct or not.
Store Procedure
Create proc usp_monthwisedata
@month int,
@year int
[Code].....
My concerns are:
1.Is the way of writing the Sp is correct to achieve the result.
2.Is it correct to set the onselectedindexchanged of both the ddls to 1 method i.e onselectedindexchanged="DropDownList1_SelectedIndexChanged"
3.Over all Performance wise is it correct.
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Feb 1, 2013
How to fill the value in drop down box according to value selected in another drop down box?
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Jun 18, 2012
How to get the first letter from dropdown value and append with second dropdown
I want to get the first character of dropdown selected value and append with second dropdown selected value.
Eg
i kept two dropdown control in page
five values binded in 1st dropdown
like
1. reebok
2. nike
3. puma
4. woodland
5. Leather
and
five values binded in 2nd dropdown
like
1. prod1
2. prod2
3. prod3
4. prod4
5. prod5
here i am going to insert into table in below format
i wand to append the value like this rprod1 (r is a reebok from 1st dropdown and prod1 is second dropdown) .
eg
nprod1
pprod1
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