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.
Protected Sub DropDownList1_SelectedIndexChanged(ByVal sender As Object, ByVal e As System.EventArgs) Handles DropDownList1.SelectedIndexChanged Response.Redirect("memberlogin.aspx?d=" + DropDownList1.SelectedValue.ToString)
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 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
I am using a DetailsView component (dvExpertsData) bound to a SqlDataSource (sqldsExpert) with a field that has a ItemTemplate (Field[9]) with a checkbox component (chkbxAvailable) assigned to it. The idea is to have only this item updated out of all the data presented, so I do not have a requirement for editing an other data. sqldsExpert's SELECT query is a call to a stored procedure as is the UPDATE query.
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 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.
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 am having 3 ListBoxs(LB1,LB2,LB3).In LB1 I am binding the names of Courses through database.The code is shon below...
da1 = new SqlDataAdapter("SELECT COURSE_ID,COURSE_NAME FROM Course_Mst", con); DataTable dt1 = new DataTable(); da1.Fill(dt1); lstCourse.DataSource = dt1; lstCourse.DataValueField = "COURSE_ID"; lstCourse.DataTextField = "COURSE_NAME"; lstCourse.DataBind();
Whenever I select particular course in LB1 all the content related to that course will be binded in LB2.The code is shown below.....
protected void LB1_SelectedIndexChanged(object sender, EventArgs e) { da2 = new SqlDataAdapter("SELECT SPEC_ID,SPEC_NAME FROM SPEC_TRANS WHERE COURSE_ID="+Convert.ToInt32(lstCourse.SelectedValue)+"", con); DataTable dt = new DataTable(); da2.Fill(dt); lstSpecilization.DataSource = dt; lstSpecilization.DataValueField = "SPEC_ID"; lstSpecilization.DataTextField = "SPEC_NAME"; lstSpecilization.DataBind(); lstSpecilization.Focus(); }
I am having a ADD button.In LB2 I can select multiple items.When I select multiple items in LB2 and click on ADD all the selected items will be binded into LB3.The code is shown below...
protected void btnAddCourseDetaisl_Click(object sender, EventArgs e) { for (int intLoopIndex = 0; intLoopIndex <lstSpecilization.Items.Count ; intLoopIndex++) { if (lstSpecilization.Items[intLoopIndex].Selected) { ListItem li = new ListItem(lstSpecilization.Items[intLoopIndex].Text, lstSpecilization.Items[intLoopIndex].Value); LB3.Items.Add(li); } } }
My problem is when I select a item from LB2 and click on ADD the selecteditem is added to LB3 but if I select the same item and click on ADD the items are again added to the LB3.I want to prevent this.Pls respond me ASAP.
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.
I have 2 radiobutton list in my page when I didn't select item from radiobuttonlist it make below error
Object reference not set to an instance of an object. Description: An unhandled exception occurred during the execution of the current web request. Please review the stack trace for more information about the error and where it originated in the code. Exception Details: System.NullReferenceException: Object reference not set to an instance of an object.Source Error:Â
Line 834: Line 835: string RBLsh = RBL2.SelectedItem.Value; Line 836: string RBLgh = RBL1.SelectedItem.Value;
I am using VB.NET and I can't compare the radio button lists selectedItem.Value to a string, it doesn't work...here is the code: (I have also tried selectedValue it does not work either)
Response.Write("RB1: " + rblOne.SelectedItem.Value + " FML FML FML<br/>") If rblOne.SelectedItem.Value = "No" Then Response.Write("Hey there!<BR/>") pnlR1.Visible = True If NumberOfAnswers = 7 Then Score = Score - 10 ElseIf NumberOfAnswers = 6 Then Score = Score - 15 Else Score = Score - 20 End If Response.Write("Score: " + Score.ToString) End If Response.End()
If rblOne.SelectedItem.Value = "No" Then is not working, notice the debug statements in there, here is the output: Why won't it evaluate that rblOne.SelectedItem.Value = "No" !?!?!? I tried rblOne.SelectedValue, that doesn't work, AND I added .ToString to both
