How To Refresh The Dropdownlist Box

Dec 22, 2008

I have used the dropdownlist box. Now i want to refresh that dropdownlist every time i select the item from it.I have written a event handler function for that.Also made autopostback = true. But still it is not working.

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How To Refresh The DropDownList Without DataBind The DropDownList Because AppendDataBoundItems="True"

Apr 7, 2010

I have a DropDownList in my page, it DataBind with a objectDataSource.

when user select an option base that i have a FormView that show the detail of selected option an it also work with an othere ObjectDataSource.

when user insert, delete or edit an option for example the name of option will in edit mode changed and i need the DropDownList be refresh that show the new name of option.

i alredy know where should i write the code but i don't know how to refresh the DropDownList without dataBind the DropDownList because AppendDataBoundItems="True".

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Refresh DropDownList From EntityDataSource?

Mar 18, 2011

What my code does is that the EntityDataSource has a Where Parameter tied to the first DropDownList and it populates the second DropDownList, but when the first DDL changes, the EntityDataSource doesn't change the values of the second DDL. Worth mentioning this is inside a ModalPopupExtender which is inside an UpdatePanel. Maybe there is a way in just putting all the data in the second DropDownList and filter it depending on the value of the first one... or something like that... so there's no need of refreshing the data.

<asp:DropDownList ID="PaqueteKitDropDownList" runat="server" DataSourceID="PaqueteEntityDataSource"
DataTextField="Nombre" DataValueField="ID_Paquete" />
<asp:EntityDataSource ID="PaqueteEntityDataSource" runat="server" ConnectionString="name=CCEntities"
DefaultContainerName="CCEntities" EnableFlattening="False" EntitySetName="Paquetes">
</asp:EntityDataSource>
<br />
<asp:Label ID="Label66" AssociatedControlID="PlanKitDropDownList" runat="server"
Text="Plan:" />
<asp:DropDownList ID="PlanKitDropDownList" runat="server" DataSourceID="PlanKitEntityDataSource"
DataTextField="Duracion" DataValueField="Costo" />
<asp:EntityDataSource ID="PlanKitEntityDataSource" runat="server" ConnectionString="name=CCEntities"
DefaultContainerName="CCEntities" EnableFlattening="False" EntitySetName="Duracion_Plan"
Where="it.ID_Paquete == @ID" OrderBy="it.Duracion ASC">
<WhereParameters>
<asp:ControlParameter DbType="Guid" Name="ID" ControlID="PaqueteKitDropDownList"
PropertyName="SelectedValue" />
</WhereParameters>
</asp:EntityDataSource>

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How To Refresh Data In Dropdownlist

Sep 9, 2008

i have a drop down list with data in it... how do i refresh it when the user add data into the databast or delete data? i tired adding data in.. the data was stored in the database but was not showed on the drop down list... how do i refresh the values in the database?

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C# - Disable Refresh When Dropdownlist Is Open?

Jan 27, 2011

i have a webpage that loads data into a gridview and refreshes the gridview every few seconds. I do this via a asp:Timer which runs a C# function every few seconds to requery the database and databind the gridview.

I also have a few dropdown lists to filter data from the gridview. These dropdown lists get their data from the same dataset as the gridview (e.g. if the gridview shows the stats of all apples being plucked from trees, then the list may contain e.g. all distinct apple types). How i refresh these dropdown lists is again to requery the dataset and reset the selected index to be one selected at time of refresh. So this causes a problem where the timer is up when the dropdown list is open - the index on the dropdown list is selected and refreshes the gridview, the dropdown list also refreshes with the current selected index and closes.

So the question i have how to disable my timer refresh from going off while the dropdown lists are active - or maybe how do i do this better?

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Web Forms :: Refresh DropDownList After Removing Items?

Oct 27, 2009

This is a basic question: i am updating a DropDownList by deleting the relevant items, the problems is that items are removed but the DropDownList still present different values (it doesn't refresh itself)

Here is the code:

[code]....

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AJAX :: Getting Dropdownlist To Update Without Postback / Refresh

Jun 27, 2010

I have a number of cascading dropdownlist controls on a page. The results in dropdownlist2 are dependent on the results in dropdownlist1, pretty basic stuff.

I now would like to eliminate the terrible postback or refresh of the page that occurs after the SelectedIndexChanged event fires on dropdownlist1, is it possible to do that in Ajax?

What I want the results in dropdownlist2 to populate without the obvious refresh of the page.

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Web Forms :: Howm To Refresh Page Update In DropDownList

Jan 12, 2011

I want dont refresh page updata DropDownList I donot use AjaxToolKit

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AJAX :: Dropdownlist.onselectindexchanged Only Refresh Some Portions Data, Not The Whole Page?

Mar 25, 2010

I have the webpage with below code. There exists dropdownlist within the gridview and updatepanel. I hope that the dropdownlistddlAltProduct refresh only some portion of data in div when OnSelectedIndexChanged. Not the whole page as now as you see autopostback='true'. How to change the current situations???

<asp:UpdatePanel ID="updPanel" RenderMode="Inline" runat="server" UpdateMode="Conditional">
<ContentTemplate>
<asp:Label runat="server" ForeColor = "Red" ID="lblMsg" ></asp:Label>

[code]...

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Web Forms :: Add Blank Item In Dropdownlist Without Using Appenddatabounditem After Control Parameter Refresh?

Feb 2, 2011

How to add blank item in dropdownlist without using appenddatabounditem after control parameter refresh?

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Forms Data Controls :: Report Viewer Refresh / Anyway To Call The Refresh Method From Codebehind?

Mar 3, 2010

I have a problem when I try to pass in paramaters for a report in my report viewer. I have set up the ObjectDataSource and set the paramaters for 3 text boxes that are on the page. The only way I have found to set the paramaters for the report is the user must fill in the paramaters and hit the refresh button on the Report Viewer toolbar ,but I would like to have the user click a asp.net button insted. Is there anyway to call the refresh method from codebehind?

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Refresh Small Part Of The Webpage Without Refresh The Entire Page In C# ?

Mar 11, 2011

how we can refresh small part of the web page without refresh the entire page in C# ?

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SQL Server :: Database Refresh Time / To Know When The Last Refresh Has Happend?

Jul 20, 2010

we have a sql server 2005...that has 70-80 databases and hundreds of tables....

It is supposed to refresh every night.... refresh is done by other vendor(3rd party).... we dont know what method(technology) they use to refresh the databases....

My question is .....

Is there a good way to know when the last refresh has happend...can we determine it from sys tables.....

the sql server is installed in window server 2003 box.... we have access to the box as well as the sql server.....

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Web Forms :: Make An Ifrom Refresh Without Having To Refresh The Whole Page?

Jan 18, 2010

1. Is there anyway to make an ifrom refresh without having to refresh the whole page?

2. My iframe just wont display when I run it. It just displays a grey screen with the file name in the middle.

<
iframe
runat="server"
id="IframeOne"
src="~/Test.aspx"></iframe>

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C# SQL And Browser Refresh Options For Refresh Page

Dec 22, 2009

I have a coupon print page that records the amount and data to a table, retrieves the Identity as the CouponID #, and then displays it onto the Coupon so the log displays who printed the coupon and for what amount.I also record if and when the coupon was redeemed. This preventa someone from using the same coupon twiceHowever on the Print Coupon page, If a person hits the refresh button, it records another line and prints another coupon for the same amount but adds another line and CouponID

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Forms Data Controls :: How To Refresh Page Without Going To Top Of Page When Refresh Is Done

Nov 3, 2010

I have a table on my page. I need to scroll down a little to get to that table. In that table i have som data that i edit and save to database. When the save is done i need to refresh the page( Response.Redirect(Request.RawUrl )) so it loads the new data to that table. When the refresh is done the page is on top again so that i need to scroll down again to see the table. This makes it very unusable for the user.

How can i refresh the page without it going back to top again? I tryed wrapping an updatepanel around the table but it didnt

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Page.Refresh Type Of Command To Refresh A Page?

Feb 10, 2010

Is there a Page.Refresh type of Command to refresh a page? I don't want to redirect to the page or refresh in javascript.

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C# - Disable Or Enable 2nd Dropdownlist In Aspx Based On Selected Choice Of The 1st Dropdownlist Box

Apr 15, 2010

I am having a problem with disabling DropDownList based on the chice of 1st DropDownList, there is no post back occuring, and it is a template based web app here is the current code:

<script type="text/javascript">
$(function() { var dropDownList1 = $('#<%= ddlUserType.ClientID %>');
var dropDownList2 = $('#<%= ddlMember.ClientID %>'); dropDownList1.change(function(e) {
if ( jQuery("#ddlUserType").val() != "ETOC") dropDownList2.removeAttr('disabled'); e.preventDefault();
else
dropDownList2.removeAttr('enabled'); e.preventDefault(); }
} );
</script>

what is happening now is page is blank and if I remove the above code everything shows, where I am going wrong. here is the plain and final javascript code which worked:

<script language="javascript">
function CheckDropDownState(lstbox)
{
if (lstbox.selectedIndex == 3) { document.forms[0].ddlMember.disabled = 1; }
else { document.forms[0].ddlMember.disabled = 0; }
}
</script>

and thew .aspx code: <asp:dropdownlist id="ddlUserType" runat="server" onclick="CheckDropDownState(this);"></asp:dropdownlist>

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Forms Data Controls :: How To Extract Value From A Dropdownlist After Bind 7 Column Name In A Dropdownlist

Mar 29, 2011

I have a table and 7 column name.

I bind the 7 column name in one dropdownlist.

Now the problem is,how do I extract the data value in a dropdownlist?

For example,

Dropdownlist contain 7 column name

-subject_name

-subject_code

-venue

-time

-seat_no

-admission_no

-subject_id

when I click the subject_name,I want it to appear in a gridview

Example

Math|9.00-10.00|Hall|18|09090J|...

Below is my current codes which I have a problem.

protected void DropDownList1_SelectedIndexChanged(object sender, EventArgs e)
{
SqlConnection conn = new SqlConnection("Data Source= EN\SQLEXPRESS;" + "Initial Catalog=ms;Integrated Security=SSPI");
SqlDataAdapter adapSel;
string mySQL = "SELECT '" + dd_list.SelectedValue+ "' FROM examtimetable ";
adapSel = new SqlDataAdapter(mySQL, conn);
conn.Open();
DataSet dsSel = new DataSet();
adapSel.Fill(dsSel);
GridView1.DataSource = dsSel;
GridView1.DataBind();
conn.Close();
}
Previously I have bind 7 column name in my dropdownlist
protected void Page_Load(object sender, EventArgs e)
{
if (Page.IsPostBack == false)
{
SqlConnection conn = new SqlConnection("Data Source= EN\SQLEXPRESS;" + "Initial Catalog=ms;Integrated Security=SSPI");
SqlCommand sqlCmd = new SqlCommand("select column_name from information_schema.columns where table_name='examtimetable' and COLUMN_NAME not like '%ID'", conn);
conn.Open();
SqlDataReader ds;
ds = sqlCmd.ExecuteReader();
dd_list.Items.Clear();
dd_list.DataSource = ds;
dd_list.DataTextField = "Column_Name";
dd_list.DataValueField = "Column_Name";
dd_list.DataBind();
dd_list.Items.Insert(0, "Select Option");
ds.Close();
conn.Close();
}
}

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DataSource Controls :: Display Employee Name In Dropdownlist Depend On Departments Name In The Other Dropdownlist

Nov 15, 2010

i use 2 dropdownlist with 2 object data source first dropdownlist to display departments name using object datasource (field to display DeptName , value of field DeptID)

second dropdownlist to display Employee name but depend on departments (field to display EmpName , value of field EmpID)

how to display employee name in dropdownlist depend on departments name in the other dropdownlist

2 tables

1 table deprtments with column (DeptID , DeptName , DeptDescription)

2 table Employee with column (EmpID , DeptID , EmpName)

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Forms Data Controls :: What Is The Code For Dropdownlist After Binding All Columns Name In A Dropdownlist

Mar 28, 2011

Currently,below is my code.

protected void DropDownList1_SelectedIndexChanged(object sender, EventArgs e)
{
SqlConnection conn = new SqlConnection("Data Source= E\SQLEXPRESS;" + "Initial Catalog=k;Integrated Security=SSPI");
SqlDataAdapter adapSel;
string mySQL = "select column_name from information_schema.columns where table_name='examtimetable' '" + dd_list + "'";....

I receive an error "Incorrect syntax near 'System.Web.UI.WebControls.DropDownList'."

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Forms Data Controls :: Make Another Dropdownlist Visible = False When Clicking In Dropdownlist On The Same Detailsview?

Mar 8, 2010

I want to making another dropdownlist visible=false when clicking in dropdownlist on the same detailsview?

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Web Forms :: Nested Dropdownlist Ondatabound => Bind Other Dropdownlist Fail

Dec 9, 2010

I have a gridview with 3 nested dropdownlists in one cell on edit like this:To get the exact fields when the user clicks on edit I used the following code(yes it's messy)

[Code]....

The BLLOnderhoud is a class and the getReserveInfo is used to get the Model - Brand(merk) Information.Since the dropdownlists are nested in the gridview I can't call them directly and they can't call any of my functions.And this is the problem, when I change the dropdownfield Model the Auto field wich is the last dropdown(in the picture is a typo) should be binded like in the following code:

[Code]....

But the dropdownlist onDataBound event can't call any of my functions that are in my class.So my question is how can the onDataBound event of the second dropbox trigger a function? The only thing that the function has to do is to bind the 3rd dropdownlist

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Web Forms :: Disable Postback When Select Dropdownlist To Control Other Two Dropdownlist Value

Mar 25, 2011

I had use a combox to let user select staff name and then it will automatically retrive the responsible recommending officer and approving officer to display in other 2 dropdownlist.

my code works fine but when user select staff name each time, the page will reload once to refresh the dropdownlist.

user complaint and don't want the page reload every time, how can i disable the postback? I need to use ajax?

[Code]....

[Code]....

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Disabling Dropdownlist Inside A Gridview Based On Value Selected On Another Dropdownlist?

Jan 11, 2011

what i m trying is i hav two dropdownlists inside the gridview... namely say ddonsiteoffsite and ddhours... now what i want is if the selectedtext of ddonsiteoffsite is "onsite" the ddhours should b disabled... i tried the code snippet but ... its not disabling the ddhours... can someone help me please..

<asp:TemplateColumn HeaderText=" OnSite/OffSite" >
<ItemTemplate>
<asp:DropDownList ID="ddOnsiteOffside" runat="server" onchange="ToggleOnOff(this)">
[code].....

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C# - DropDownList Validation - ModelState.IsValid Is Always False / DropDownList Won't Be Validated

Feb 10, 2011

I try to create a asp.net mvc 2 application.

My DropDownList won't be validated!

I have a core model class called Animal with some attributes and the same for the class Genus. These classes are mapped to nHibernate.

[code]....

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Web Forms :: Populate One Dropdownlist Based Upon Action Of Another Dropdownlist?

Jun 5, 2009

I have two dropdownlists and trying to populate second dropdownlist based on selection of item of another(first) dropdownlist.First dropdownlist contain class number and according to the class number the second dropdownlist should show the subjects from database. I am using c# with ASP.NET and MSSQL server. waiting for the reply.

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C# - Populating Dropdownlist Using MVC2 Based On Another Dropdownlist (Cascading)

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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Access :: Adding Item To Dropdownlist From Database Using First Dropdownlist?

May 28, 2010

i have two dropdownlist , i want to add item in dropdownlist 2 from database if the city is changed in first dropdownlist..I am using access database

here is my code:

[code]....

but when i select any text , it will not show anything in dropdownlist2 ..

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Web Forms :: Populate Dropdownlist From Another Dropdownlist Selection?

Dec 29, 2010

I have 2 dropdownlist, one is to dropdown department, and another dropdown staffnames. the secong dropdownlist will based on the selection of department as each department has different staffs i have 2 tables department and staff in my database , in my department table i have departmentid as PK and departmentname, in my staff table i have staffname and departmentid as FK. So my ques is how am i going to populate staffname in the dropdownlist according to the selection of department.

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