I am using the following code :
Protected Sub DropDownList1_SelectedIndexChanged(ByVal sender As Object, ByVal e As System.EventArgs) Handles DropDownList1.SelectedIndexChanged
Response.Redirect("memberlogin.aspx?d=" + DropDownList1.SelectedValue.ToString)
[code]...
I got a view that uses the ajax.beginform tag.This works great but if I want to do some validation to the data and then return a error message to the page it doesnt work for me.Here my code :
[Code]....
And the actionResult :
[Code]....
[Code]....
I have a dropdownlist in a Usercontrol defined in a table as:
<asp:DropDownList
runat="server"
id="lstDIDFCM"
Width="135px"
AutoPostBack="true"
></asp:DropDownList>
i have the AutoEventWireup="True"; I have a breakpoint in the code behind on the SelectedIndexChange event.
The event does fire but the index is not changing. No matter what item in the list I select, the SelectedIndex always = 0. The list is bound to a dataset and the DataTextField and DataValueField are both set to the same value. Why is the index and SelectedValue not updating?
First post here, I usually try not posting until I am completely lost. I have a webform that gets a dynamic dropdownlist added to a placeholder in a method during pageload. During a submit of the page, I want to be able to get the selectedItem in the DropDownList that was also added dynamically from a DB. I know the ID of the DropDownList, and I know the Value of all the ListItems. Although when I am trying to use FindConrol(ID), and assign it to a DropDownList, the Control comes back Null and I get an error saying "Object Reference not set to and Instance of an Object", I believe because its not finding the control.
[Code]....
Can anyone show me how to use this to get access to the properties of the dynamic DropDownList properties, especially the ListItems within.
So here is the problem , Is it possible to get the "SelectedItem.Text" of a binded dropdownlist? because everytime I'm getting null Even though I'm having
items in the dropdownlist.
I'm getting the items that I want in the dropdownlist but I can't find out which one is selected.
[Code]....
here is my aspx code:
[Code]....
Object reference not set to an instance of an object.
if((drpdept.SelectedItem.Text != "--Select--")|| (drpdept.SelectedItem.Text !=null))
{
}
i hve above line but i get Object reference not set
I have a dropdownlist is set to '--Select Item--' when the form is loaded first time. I don't see the Selected Item getting selected after I submit the form. It is set to '--Selected Item--' again.
<%= Html.DropDownList("lstDetails", new SelectList((IEnumerable)ViewData["DetailList"], "ID", "Details"), "--Select Item--")%>
I am populating a DropDownList control as follows -
public partial class UserControls_PMS_Send2DeliveryTeam : System.Web.UI.UserControl
{
protected void Page_Load(object sender, EventArgs e)
[code]...
I give up. After many hours of scouring the internet, cannot find a simple example of binding a simple object to a ListView and figure out which one is selected in the SelectedIndexChanged event.
Many people talk about the SelectedItem and SelectedItems properties; which somehow, according to intellesense, do not even exist on my ListView. I must have a "special .Net build" :)
If I have a collection of "Books" bound to a ListView. How do I get the "selected book" in the SelectedIndexChanged event? (Multiselect = false)
I would think it's something like:
Book MyBook = (Book)ListView1.SelectedItem
I'd even settle for
Book MyBook = (Book)ListView1.SelectedItems[0]
No such luck. My very special ListView does not seem to have either property.
I've been pulling my hair out over this one... I've searched on the net and even in the forums, but can't seem to come up with an answer for a simple question.I tried the following code inside my html to get the selected value that comes from our database into the grid and it doesn't work. I am positive that a value exists for the itemType. It is 1. Instead of Checked, I tried SelectedItem and SelectedIndex. Neither of those worked.
<code>
Checked='<%# DataBinder.Eval(Container.DataItem, "itemType")%>'
</code>
I erased the above code from my grid and inside the ItemDataBound event, I placed the following code, but don't know what other code I should place next after it. I know the value inside "itemType" is 1 by debugging it.
<code>
RadioButtonList itmtype = e.Item.FindControl("rblItemType") as RadioButtonList;
</code>
How can I simply find the selecteditem in the list coming back from the database inside the itemdatabound event?
I don't know how to go about this. I have web form with two dropdown lists. one named Recruiter and the other Account manager. I have two two SQL tables named Perm_Commision_Lookup & UserList. The Perm_Commision_Lookup table does not contain recruiter's email, so I decided to Inner Join it with UserList table which contain recruiter emails. The LookupValue column from the Perm_Commision_Lookup table is what's displayed to the end user and the pk_LookupID column is the one that's inserted into the database. What I want to achieve is this: When a user select let's say "John Doe" from the Recruiter dropdown list, I want to send out an email to John Doe and at the same time insert the selected value (pk_LookupID) into the database. I set the DataTextField="LookupValue" and DataValueField="pk_LookupID but how to get the User_Email is another problem. Below is my SQL select...
SELECT Perm_Commision_Lookup.pk_LookupID, Perm_Commision_Lookup.LookupValue, UserList.User_Email FROM Perm_Commision_Lookup INNER JOIN UserList ON Perm_Commision_Lookup.LookupUserName = UserList.GM_Username
Change selecteditem of ddl on click button
View 2 RepliesIn the following code everytime its taking only one item from dropdownlist. When I select any other item from dropdownlist its same as first item.
protected void DropDownList1_SelectedIndexChanged(object sender, EventArgs e)
{
DataSet _subcat = new DataSet();
_subcat = serviceus.Get_SERVICEUS_SUB_CATEGORYLIST(DropDownList1.SelectedValue.ToString());
lbsubcategory.DataSource = _subcat.Tables[0].DefaultView;
lbsubcategory.DataTextField = Convert.ToString(_subcat.Tables[0].Columns["CATEGORY_SUB1_NAME"].ColumnName);
lbsubcategory.DataBind();
Label5.Visible = true;
}
I would like to install my asp .net site on a free host. what do I need to install in order that the mschart control will work on the host.
what are the basic requirements.
at the moment I get an error about it.
[Code]....
I have tryed this sorting code here in first post http://forums.asp.net/t/956540.aspx but it doesnt work. any tips?
Im using the following code to get the gridview rows that are checked and then add the values to the database.Its all works correctly unless apart from when i check the row at the top of the gridview where when i check the checkbox it doesnt even change to checked so i cannot add that row into the database.
[Code]....
this is the code
<%
@
Page
Language="VB"
AutoEventWireup="false"
CodeFile="Default.aspx.vb"
Inherits="_Default" %>
[Code]....
Why I am unable to setfocus to my list box if the index > 820
My list box contains 2000 items and the index is not able to set the focus if the index > 820
I am using the following code :
Protected Sub DropDownList1_SelectedIndexChanged(ByVal sender As Object, ByVal e As System.EventArgs) Handles DropDownList1.SelectedIndexChanged
Response.Redirect("memberlogin.aspx?d=" + DropDownList1.SelectedValue.ToString)
End Sub
but DropDownList1.SelectedValue.ToString expression returns the TEXT of the selectedItem.
Here is the dropdownlist aspx side :
<asp:ListItem meta:resourcekey="ListItemResource1" Text="Turkçe" Value="tr"></asp:ListItem>
<asp:ListItem meta:resourcekey="ListItemResource2" Text="English" Value="en"></asp:ListItem>
<asp:ListItem meta:resourcekey="ListItemResource3" Text="Russki" Value="ru"></asp:ListItem>
<asp:ListItem meta:resourcekey="ListItemResource4" Text="Français" Value="fr"></asp:ListItem>
I have two dropdownlist's.DropDownList2(not bound to a datasource) and DropDownList3(bound to a datasource)
On change on input in one dropdownlist some content in the other Dropdownlist should change. For that i had used the logic as.
Autopostback is enabled for both this controls.
protected void DropDownList2_SelectedIndexChanged(object sender, EventArgs e)
{
if (DropDownList2.SelectedItem.Text == "Stamp")[code]....
Now the problem is when i select DropDownList2.SelectedItem.Text == "Reg" STA and STM are not present. I want STA and STM values back in the dropdownlist on selection of 'Reg'.
When i first load my page and select 'Reg' all the values in DropDownList3(including 'STA' and 'STM') are present and than when i select 'Stamp' the values 'STA' and 'STM' are lost(as shown in the code). Now again when i select 'Reg' this values are not there, i want this values to be present again. What do i have to do?? Do i have to bind it again to database?
Is there any other logic for it to be used in a different way ?
I have a dropdownlist that is not bound to a datasource, I have hard coded a few items in the list cause the list is always constant and will never grow and there are only 4 entries init. Anyway, after i load the page and make a selection from the dropdownlist and do a postback, the dropdown always returns to the default selection...which tells the users to make a selection.How do I get the dropdown to keep the selected value after the postback? I want to be able to display the selected value all through until another selection is made.
View 6 RepliesI 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();
}
}
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'."
I want to making another dropdownlist visible=false when clicking in dropdownlist on the same detailsview?
View 4 Repliesi am bulding something for myself in asp.net and SQL but am having a few problems. I will list them below and see what happens :)Please note that i have a lbl control permantly on my pages which is set in the master page, this is what displays my messages.example = message.text = "Please insert your name"1. I have a data table that calls a table with its values. its basicly 4 ddl's(day, month, date & year) select what date then search. Mon Mar 21 2010
SEARCH(btn)
" SqlExeption was unhandled by user code "
this is basicly because the table doesnt exist. How do i tell asp to return a message if the the table doesnt exist in sql server.
