C# - How To Get Multiple Selections From .NET CheckBoxs
Feb 1, 2011
This seems like it should be prettty easy - but I just can't get it to work!I have an enum in my model, which I want to display as a list of checkboxes. The user can select multiple checkboxes, and I want to save this in the database.
So the enum is like so (approx 20 elements unabridged):
public enum ReferrerType
{
[Description("No Data")]
NoData = 9999,[code]....
And it doesn't work! I guess I'm missing something obvious, but I can't work out what. There are no errors - just an empty database table where referrers should be.
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[Code]....
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using System;
using System.Collections.Generic;
using System.Linq;
[Code].....
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protected void Button1_Click(object sender, EventArgs e)
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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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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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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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