We Keep Coding

Access OwnerTableView ParentItem

It is my Vb.net code it works perfectly.
Protected Sub ChkTaxCheckedChanged1(ByVal sender As Object, ByVal e As EventArgs)
Dim chkTax As CheckBox
Dim gv1 As GridDataItem
chkTax = TryCast(sender, CheckBox)
gv1 = DirectCast(chkTax.NamingContainer, GridDataItem)
Dim txtAmount1 As Label = CType(gv1.OwnerTableView.ParentItem.FindControl("lblItemAmount"), Label)
End Sub
But now I want to achieve the same functionality in clientside using JavaScript.
Like :
function ChkTaxCheckedChanged1(sender, args) {
var check = sender.get_parent()..??????
}
Any one know how can I do this?

Try this.
<script>
function handleClick(sender,args) {
//i have used jquery so do not forgot add jquery reference
var checkboxid = sender.get_id();
var parentRow = checkboxid.parent().parent().parent().parent().parent().parent()[0].previousSibling;
$(parentRow).find('span').html('Your text comes here');
}
</script>

Getting asp:TextBox text property in codebehind from a web user control after a javascript update

Here is the scenario.
I have a simple page containing an asp:PlaceHolder.
<%# Page Title="" Language="VB" MasterPageFile="~/MasterPage.master" AutoEventWireup="false" CodeFile="TrainingPlan.aspx.vb" Inherits="TrainingPlan" %>
<%# Reference Control="ctlTask.ascx" %>
<%# Reference Control="ctlTaskheader.ascx" %>
<asp:Content ID="Content1" ContentPlaceHolderID="MainContent" Runat="Server">
<div class="centered">
<h2><asp:Label ID="lblPlanTitle" runat="server" Text="Plan Title"></asp:Label></h2>
<hr />
<br />
<asp:ImageButton ID="imgbtnSave" runat="server" ImageUrl="~/Images/save.ico" />
<br />
<asp:PlaceHolder ID="PlanPlaceHolder" runat="server"></asp:PlaceHolder>
</div>
</asp:Content>
The placeholder on this page is populated with several rows of the same web user control. This web user control contains several textboxes. For each textbox in this web user control I have public properties to set and get the text value. In the page load event of the web user control I am adding onClick attributes to some of those textboxes like so.
Protected Sub Page_Load(sender As Object, e As EventArgs) Handles Me.Load
txtTrainingStart.Attributes.Add("onClick", "txtTrainingStart_Click(" & txtTrainingStart.ClientID & ", " & txtTask.ClientID & ");")
txtTraineeBadgeNum.Attributes.Add("onClick", "txtTraineeBadgeNum_Click(" & txtTraineeBadgeNum.ClientID & ", " & txtTask.ClientID & ", " & txtTrainingStart.ClientID & ");")
txtTrainerBadgeNum.Attributes.Add("onClick", "txtTrainerBadgeNum_Click(" & txtTrainerBadgeNum.ClientID & ", " & txtTrainingComplete.ClientID & ", " & txtTask.ClientID & ", " & txtTraineeBadgeNum.ClientID & ", " & Session.Item("isTrainer").ToString.ToLower & ");")
txtDecertifyingOfficial.Attributes.Add("onClick", "txtDecertifyingOfficial_Click(" & txtDecertifyingOfficial.ClientID & ", " & txtTrainerBadgeNum.ClientID & ", " & txtTask.ClientID & ", " & Session.Item("isDecertifyingOfficial").ToString.ToLower & ");")
End Sub
For each of those onClick events I have corresponding javascript functions.
<script type="text/javascript">
function txtTrainingStart_Click(txtTrainingStart, txtTask) {
//processing and updates to textboxes here
}
</script>
Here is the problem.
On the main page containing the placeholder I have a save button. In the click event of the save button I am looping through each of the web user controls contained in the placeholder to process and save the data.
Protected Sub imgbtnSave_Click(sender As Object, e As ImageClickEventArgs) Handles imgbtnSave.Click
For Each item As Control In PlanPlaceHolder.Controls
Dim task As ctlTask = TryCast(item, ctlTask)
If Not IsNothing(task) Then
'need updated textbox values here.
'The following line gets the original textbox value, not the updated value that I need
Dim test As String = task.trainingStart
End If
Next
End Sub
Everything I have tried I can only get the original value that was in the textbox when the page loaded. I would think that this should be simple and I am just missing something basic. I've searched google high and low for the solution but I have yet to find one. This was the closest thing I found -> Set Text property of asp:label in Javascript PROPER way.
Although that post deals with a label rather than a textbox and isn't using a placeholder containing several web user controls. From what I understand I need to POST the updates back to the server from the client but I don't know how to do this. I've tried using the Request.Form property but I couldn't seem to make that work. What am I missing?
Thank you for any help,
Rylan
EDIT
Here is the code that populates the placeholder with the web user controls as requested
Protected Sub Page_Load(sender As Object, e As EventArgs) Handles Me.Load
Dim DBConn As MySqlConnection
Dim cmd As New MySqlCommand
DBConn = New MySqlConnection(Globals.mysqlConStr)
Try
lblPlanTitle.Text = Request.QueryString("plan_name") & " Training Plan"
If Session.Item("empID") = -1 Then
empID = clsUser.getID
Else
empID = Session.Item("empID")
End If
Dim strSQL As String = "SELECT * FROM task_revs tr WHERE tr.change != 'Deleted' and tr.id_plan = " & Request.QueryString("id_plan") & " ORDER BY task_num, rev_date desc"
Dim da As New MySqlDataAdapter(strSQL, DBConn)
Dim dtAllRevs As New DataTable
da.Fill(dtAllRevs)
Dim dtCurrentRev As New DataTable
Dim lastTaskNum As String = ""
dtCurrentRev = dtAllRevs.Clone
For Each row As DataRow In dtAllRevs.Rows
If lastTaskNum <> row("task_num") Then
dtCurrentRev.ImportRow(row)
lastTaskNum = row("task_num")
End If
Next
strSQL = "SELECT * FROM checkoffs WHERE emp_id = " & empID
da = New MySqlDataAdapter(strSQL, DBConn)
Dim dtCheckoffs As New DataTable
da.Fill(dtCheckoffs)
Dim addColor As Boolean = True
Dim tabWidth As Integer
Dim Header As ctlTaskHeader = LoadControl("ctlTaskHeader.ascx")
PlanPlaceHolder.Controls.Add(Header)
For Each row As DataRow In dtCurrentRev.Rows
Dim newRow As ctlTask = LoadControl("ctlTask.ascx")
tabWidth = 0
newRow.id_Task = row("id_Task")
newRow.taskNum = row("task_num")
newRow.task = row("task")
If row("is_header") = True Then
If row("task_num").ToString.EndsWith(".0") And row("task_num").ToString.Split(".").Count = 2 Then
newRow.taskBold = True
newRow.taskItalic = True
Else
newRow.taskForeColor = Drawing.Color.Blue
newRow.taskItalic = True
tabWidth += 10
End If
Else
tabWidth += 10
End If
For i As Integer = 0 To row("task_num").ToString.Split(".").Count - 3
tabWidth += 10
Next
newRow.TabSize = tabWidth
If Not IsDBNull(row("task_level")) Then
For i As Integer = 0 To row("task_level") - 1
newRow.taskLevel = newRow.taskLevel & "*"
Next
End If
If addColor = True Then
newRow.taskNumBackColor = Drawing.Color.LightGray
newRow.taskLevelBackColor = Drawing.Color.LightGray
newRow.taskBackColor = Drawing.Color.LightGray
newRow.trainingStartBackColor = Drawing.Color.LightGray
newRow.trainingCompleteBackColor = Drawing.Color.LightGray
newRow.traineeBadgeNumBackColor = Drawing.Color.LightGray
newRow.trainerBadgeNumBackColor = Drawing.Color.LightGray
newRow.decertifyingOfficialBackColor = Drawing.Color.LightGray
End If
addColor = Not addColor
For Each checkoff As DataRow In dtCheckoffs.Rows
If checkoff("id_task") = row("id_task") Then
If Not IsDBNull(checkoff("training_start")) Then
newRow.trainingStart = checkoff("training_start")
End If
If Not IsDBNull(checkoff("training_complete")) Then
newRow.trainingComplete = checkoff("training_complete")
End If
If Not IsDBNull(checkoff("trainee_badge")) Then
newRow.traineeBadgeNum = checkoff("trainee_badge")
End If
If Not IsDBNull(checkoff("trainer_badge")) Then
newRow.trainerBadgeNum = checkoff("trainer_badge")
End If
If Not IsDBNull(checkoff("decertifying_official")) Then
newRow.decertifyingOfficial = checkoff("decertifying_official")
newRow.taskNumBackColor = Drawing.Color.LightSalmon
newRow.taskLevelBackColor = Drawing.Color.LightSalmon
newRow.taskBackColor = Drawing.Color.LightSalmon
newRow.trainingStartBackColor = Drawing.Color.LightSalmon
newRow.trainingCompleteBackColor = Drawing.Color.LightSalmon
newRow.traineeBadgeNumBackColor = Drawing.Color.LightSalmon
newRow.trainerBadgeNumBackColor = Drawing.Color.LightSalmon
newRow.decertifyingOfficialBackColor = Drawing.Color.LightSalmon
End If
End If
Next
If row("is_header") = True And PlanPlaceHolder.Controls.Count > 1 Then
Dim newLine As LiteralControl = New LiteralControl("<br/>")
PlanPlaceHolder.Controls.Add(newLine)
End If
PlanPlaceHolder.Controls.Add(newRow)
Next
Catch ex As Exception
clsLog.logError(ex)
Finally
DBConn.Close()
End Try
EDIT 2
I thought it might also be important to show how I am making updates to the textboxes in my javascript functions
function txtTrainingStart_Click(txtTrainingStart, txtTask) {
var currentdate = new Date();
var datetime = (currentdate.getMonth() + 1) + "/" + currentdate.getDate() + "/" + currentdate.getFullYear() + " " + getTimeAMPM();
txtTrainingStart.value = datetime;
txtTrainingStart.style.backgroundColor = "yellow";
}

Edit 3:
The below code will work for static controls, but dynamically-created controls will not be preserved on postback. You will need to store the updated values so they can be retrieved on postback somehow (e.g. a Session variable or HiddenField). If possible, I would create the controls statically and populate them in page_load, hiding controls with no data - this would allow you to get the values on postback as below.
Hmm...I set up a super simplified version of your code and ran it pretty much as is (without the database function), and it seems to be working fine.
Here is the simplified version I used:
<asp:Content id="Content1" ContentPlaceHolderID="MainContent" runat="server">
<asp:ImageButton ID="imgbtnSave" runat="server"></asp:ImageButton>
<asp:PlaceHolder ID="PlanPlaceHolder" runat="server">
<asp:TextBox runat="server" ID="txtTrainingStart" value="before" ></asp:TextBox>
</asp:PlaceHolder>
</asp:Content>
Javascript:
function txtTrainingStart_Click(txtTrainingStart, txtTask) {
var currentdate = new Date();
var test = "after";
txtTrainingStart.value = test;
txtTrainingStart.style.backgroundColor = "yellow";
}
VB:
Protected Sub imgbtnSave_Click(ByVal sender As Object, ByVal e As ImageClickEventArgs Handles imgbtnSave.Click
For Each item As TextBox In PlanPlaceHolder.Controls
'need updated textbox values here.'
Debug.WriteLine(item.ID)
Debug.WriteLine(item.Text)
Next
End Sub
I'm getting the updated value of the textbox, so you should be able to pass that value to a function and do whatever operations you need.
Let me know if I'm missing something.
Edit 2: I just had a thought--can you check if page_load is being called after you click the save button? I wonder if it is overwriting your updated values with the original values again.
If it is, I would wrap the database functionality in page_load with a postback check:
If Not IsPostBack
' connect to database'
' populate placeholder'
End If

I have figured it out. I was on the right track using Request.Form I just didn't fully understand how to use it yet.
New code for my save button
Protected Sub imgbtnSave_Click(sender As Object, e As ImageClickEventArgs) Handles imgbtnSave.Click
Dim coll As NameValueCollection
coll = Request.Form
For x = 0 To coll.Count - 1
Response.Write("Key = " & coll.GetKey(x) & " Value = " & coll(x) & "<br />")
Next
End Sub
The loop outputs all the control keys and updated values from the postback like so.
Key = ctl00$MainContent$ctl01$txtTrainingStart Value = 8/1/13
Key = ctl00$MainContent$ctl01$txtTrainingComplete Value = 8/2/13
Key = ctl00$MainContent$ctl02$txtTrainingStart Value = 8/3/13
Key = ctl00$MainContent$ctl02$txtTrainingComplete Value = 8/4/13
I use a hidden field to store a database row id with each dynamically created web user control. From that point it's easy to insert the updated values into my database.

Calling JS function from ASP.NET codebehind

I have two javascript functions in my aspx page. They use some fabric.js functions.
function saveCanvas() {
js = JSON.stringify(canvas.toDatalessJSON());
$get('<%= txtJSON.ClientID%>').value = js;
}
function loadCanvas() {
js = $get('<%= txtJSON.ClientID%>').value;
canvas.clear();
canvas.loadFromDatalessJSON(js);
canvas.renderAll();
}
And in the codebehind:
Protected Sub SaveJSON()
Dim scriptKey As String = "123"
Dim javaScript As String = "<script type='text/javascript'>saveCanvas();</script>"
ClientScript.RegisterStartupScript(Me.GetType(), scriptKey, javaScript)
End Sub
Protected Sub LoadJSON()
Dim scriptKey As String = "456"
Dim javaScript As String = "<script type='text/javascript'>loadCanvas();</script>"
ClientScript.RegisterStartupScript(Me.GetType(), scriptKey, javaScript)
End Sub
Now my question: Why does loadCanvas work while saveCanvas does not? txtJSON is not populated with the JSON-string.
Calling the saveCanvas function from the aspx page works fine.

The problem is that you call saveCanvas after the postback is done and at that point the canvas data is long gone.
If you have a button "Save" then you need to call saveCanvas when it is clicked so that the data is saved before the browser posts the page back to the server:
<asp:Button runat="server" Text="Save" OnClickClick="saveCanvas()" />

How to get focus on TextBox after PostBack and Why Repeater control showing data when TextBox is empty?

I am working on a C# ASP.NET 4 project where I need to have a search box that dynamically searches the content from database's table and shows it in Repeater Control everytime I enter alphabet in TextBox.
I have done it upto this but the problem is
1) I am losing focus on TextBox everytime I enter single alphabet
2) When I erase content in TextBox, Repeater Control still shows data
<asp:TextBox ID="TextBox1" runat="server" Width="90%"
ontextchanged="TextBox1_TextChanged"
onKeyUp="return serachme()"
AutoPostBack="false"></asp:TextBox>
<script language="javascript" type="text/javascript">
function serachme() {
__doPostBack('<%=TextBox1.UniqueID %>', "onKeyUp");
}
</script>
And,
protected void TextBox1_TextChanged(object sender, EventArgs e)
{
con.Open();
SqlDataAdapter mycommand2 = new SqlDataAdapter("select qid,title from globalq where title like '%" + TextBox1.Text + "%'", con);
DataSet ds = new DataSet();
mycommand2.Fill(ds);
askQ.DataSource = ds;
askQ.DataBind();
con.Close();
}
I already saw examples of Set focus in TextBox after postback
and Set focus in TextBox after postback but did not understood it coz I dont know JavaScript that much.
So my Question is
1) How to get focus on TextBoX everytime I __doPostBack?
2) When I erase content in TextBox, Why Repeater Control still shows data and how to not show that?
Thanks for your efforts in advance,
Nikhil

Have you tried this?:
con.Open();
SqlDataAdapter mycommand2 = new SqlDataAdapter("select qid,title from globalq where title like '%" + TextBox1.Text + "%'", con);
DataSet ds = new DataSet();
mycommand2.Fill(ds);
askQ.DataSource = ds;
askQ.DataBind();
con.Close();
//apply focus back to textbox
TextBox1.Focus();

Passing Variable from JS to VB.net

I have a variable that gets a value in a js function. I need to get its value as a double into a vb.net variable.
I have tried putting the variable into a label then grabbing it from the label in vb.net as shown in the code below:
Js part.
document.getElementById("Label1").innerText = nwLat;
then in the vb part
Dim nwLat As Double
nwLat = Label1.Text
MsgBox(nwLat)
it does not work for me any ideas? the error that comes up is
Input string was not in a correct format.
Cheers!

Easiest way without any type of ajax would be to use a hidden field.
Markup:
<asp:HiddenField ID="nwLatHidden" runat="server" Value="" />
JS:
document.getElementById('nwLatHidden').value = '6.00'; // or of course the value from your function.
.NET during your postback routine:
Dim nwLat As Double
nwLat = nwLatHidden.Value

In JavaScript:
__doPostBack(
'edit',
JSON.stringify({ ID: id, Code: code, AcctNo: acctNo })
);
In VB.NET:
Protected Sub Page_Load(s As Object, e As EventArgs) Handles Me.Load
If Not Page.IsPostBack Then
'...
Else
Dim eventTarget As String = Request.Form!__EVENTTARGET
Dim eventArgument As String = Request.Form!__EVENTARGUMENT
If Not eventArgument Is Nothing AndAlso Not eventTarget Is Nothing AndAlso eventTarget = "edit" Then
Dim jss As New JavaScriptSerializer()
Dim ac As AccountCode = jss.Deserialize(Of AccountCode)(eventArgument)
End If
End If
End Sub

You need to use the ClientID or the UniqueID:
document.getElementById("<%=Label1.UniqueID%>").innerText = "Hi";