AJAX :: CascadingDropDowns Set From Saved User Selections?

May 28, 2010

I have a set of three dropdowns using the cascadingdropdown extender from the toolkit. It is setup and working fine for saving off user selections to the database. How do i set them when a user comes back to the page to the users saved selections. I use a webservice to set the data for each dropdown as the parent dropdown is selected.

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handle site navigation and retaining user selections.

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This functions as expected and the gridview pagination functions as expected.

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This functions as expected.

On Page 2:

This provides functionality to perform some data creation/manipulation tasks.

It also provides a link to navigate to another page where other tasks can be performed (Page 3).

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[code]....

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[Code]....

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Here is my markup:

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[Code].....

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[Code]....

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how to do multiple selection in dropdownlist in asp.net

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Mar 18, 2010

Is there an easy way to clear all the selected items of a checkbox list control? When a user has selected multiple items?

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Web Forms :: How To Change Code To Multiple Selections

Jul 31, 2010

string lvStatus =
string.Empty;

if (ClbLeaveStatus.SelectedIndex == 0) [code]..

how to change this code to multiple selections

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Web Forms :: Trying To Populate The Value (s) Of A Listbox That Has Multiple Selections?

Jan 20, 2010

I am trying to populate the value(s) of a listbox that has multiple selections:

Assignment Preference:<br />

<asp:ListBox ID="assignmentPreferenceList" SelectionMode="Multiple" runat="server">

<asp:ListItem Value="">None</asp:ListItem>

<asp:ListItem Value="CONTRACTING">CONTRACTING</asp:ListItem>

<asp:ListItem Value="DIRECT HIRE">DIRECT HIRE</asp:ListItem>

<asp:ListItem Value="CONTRACTING-DIRECT HIRE">CONTRACTING-DIRECT HIRE</asp:ListItem>

</asp:ListBox>

I am using a datareader in code behind to "loop" through the values:

string sql4 = "Select * from assignmentPref where tID=" + (dr["id"].ToString());

SqlCommand comm4 = new SqlCommand(sql4, con3);

SqlDataReader dr4 = comm4.ExecuteReader();

while (dr4.Read())

{

assignmentPreferenceList.SelectedValue = (dr["assignmentPref"].ToString());

}
Works great with 1 assignment preference but with 2 or 3 it craps out.

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Web Forms :: List Box Multiple Selections Spacing

Apr 6, 2010

I have a web form that when completed sends an e-mail with the data from the form. I have a list box that permits muptiple selections and it post to the email with the following code.

sb.Append("<br />Products of Interest:....");
for(int i = 0; i < ListBox2.Items.Count;i++)
{
if(ListBox2.Items[i].Selected)
sb.Append(ListBox2.Items[i].Text);
}

It works fine except that when multiple tiems are selected, they run together on the form. Instead of "Beds Dressers Tables", I get "BedsDressersTables".

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Google Chrome Caching DropDownList Selections

May 21, 2010

I'm experiencing what seems to be a caching issue with Google Chrome and Safari on my cart page. In the cart there are 2 dropdown lists. When you hit the checkout button after changing the values in the dropdown lists, it commits what's selected in the lists to the database.

It's a little bit hard to explain the unexpected behavior so I will try to write it out step by step with an illustration of my problem.

Lets say the first dropdown list has the values of:

VALUE1
VALUE2
VALUE3

And the second dropdown list has the values of:

DUMBO1
DUMBO2
DUMBO3

I add an item to my cart.

Screen Says: VALUE1, DUMBO1

Database Says: VALUE1, DUMBO1

I hit Checkout.

Database says: VALUE1, DUMBO1 (I can't see the dropdown lists after I hit checkout because i'm not at the cart page)

I hit the back button.

Screen Says: VALUE1, DUMBO1

Database Says: VALUE1, DUMBO1

I drop down the VALUE1 combo and select VALUE2, VALUE2 is selected momentarily and then the site posts back and VALUE1 is re-selected in the drop down list (from being reloaded from the DB)

MOMENTARILY Screen Says: VALUE2, DUMBO1

Database Says: VALUE1, DUMBO1

THEN AFTER POSTBACK FROM DROPDOWNLIST_SELECTIONCHANGED EVENT

Screen Says: VALUE1, DUMBO1

Database Says: VALUE1, DUMBO1

Hit Checkout.

Database Says VALUE1 ,DUMBO1 (I can't see the dropdown lists after I hit checkout because i'm not at the cart page)

Go back.

Screen Says: VALUE2, DUMBO1

Database Says: VALUE1, DUMBO1

So it appears that it's remembering my selection of VALUE2 even though it jumped back to VALUE1 before I checked out.

It seems to be a caching problem, however I've got some no-cache code to prevent caching of that page that works great in firefox and internet explorer but seems to be failing in Chrome and Safari. I'm basically returning in the headers for the cart page: no-cache, no-store, and must-revalidate to attempt to prevent caching, but based on this scenario it seems to be caching the page anyway and not reloading it when I hit the back button.

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C# - Want To Do Is Write The IDs Of Selections Made From The Dropdown And Checkboxlist To The DB?

Feb 6, 2011

I have a dropdown with names of project managers and a checkboxlist with names of team members. What I want to do is write the IDs of selections made from the dropdown and checkboxlist to the DB. I am using the following code, but only IDs from the checkboxlist are stored in the table. What can I do to store the ID from the dropdown simultaneously? Thanks for your help.

for (int i = 0; i < project_members.Items.Count; i++)
{
if (project_members.Items[i].Selected)

[code]...

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C# - Persisting Date Selections When Visible Month Changes?

Feb 21, 2011

Dim List As New List(Of DateTime)

Then in my button click event:

If InputBookinglength.SelectedValue.ToString = "2" Then
Dim paramstring As New StringBuilder
If Session("SelectedDates") IsNot Nothing Then
Dim newList As List(Of DateTime) = DirectCast(Session("SelectedDates"), List(Of DateTime))

[Code]....

This code works fine when selecting multiple days in one month. But when you switch to display a different month, the previous months selections are lost. how to persist the selections when the visible month changes.

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Postback - ListBox Selections Not Working In Panel?

Apr 30, 2010

I'm having trouble processing a listbox after selecting some items from it. In my markup, the listbox is contained within an asp:panel and is populated during page load in the codebehind. That part works fine.

It's when I select various items and submit that I have trouble. My handler loops through the listbox items but doesn't see any as being selected. I'm not sure why.

Here's the markup:

<asp:Panel ID="panEdit" runat="server" Height="180px" Width="400px" CssClass="ModalWindow">
<table width="100%">
<asp:label runat = "server">Choose your items</asp:label>
tr>
<td>
<asp:ListBox ID="lstFundList" runat="server" SelectionMode="Multiple" OnLoad="lstFundList_LoadData">
</asp:ListBox>
</td>
</tr>
</table>
<asp:Button ID="btnUpdate" runat="server" Text="Update" OnClick="btnUpdate_OnClick"/>
<asp:Button ID="btnCancel" runat="server" Text="Cancel" OnClientClick="$find('ModalPopupExtender1').hide(); return false;" />
</asp:Panel>

In my btnUpdate_OnClick handler I can't see any listbox items that are marked as selected. I assume something strange is going on with respect to postback and the panel?

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