I try to open NavigateUrl Telerik Window from a button in a grid view which exist in an update panel but i fail , it doesn't open the window at all
My .aspx :
<asp:TemplateField HeaderText="details" ItemStyle-HorizontalAlign="Center">
<ItemTemplate>
<asp:ImageButton ID="ibtn_details" runat="server" ImageUrl="~/images/details.png"
CommandArgument='<%#((GridViewRow)Container).RowIndex%>' CommandName="Get_details" />
</ItemTemplate>
</asp:TemplateField>
<telerik:RadWindow runat="server" ID="radwin_popupdetails" NavigateUrl="PopUpDetail.aspx"
Modal="true" InitialBehaviors="Maximize">
</telerik:RadWindow>
<script type="text/javascript">
function openWinNavigateUrl() {
$find("<%=radwin_popupdetails.ClientID %>").show();
}
</script>
My .cs :
protected void gv_inbox_RowCommand(object sender, GridViewCommandEventArgs e)
{
int index = Convert.ToInt32(e.CommandArgument);
if (e.CommandName == "Get_details")
{
Session["main_code"] = int.Parse(((HiddenField)gv_inbox.Rows[index].Cells[1].FindControl("HDN_MainCode")).Value);
//System.Web.UI.ScriptManager.RegisterClientScriptBlock(UpdatePanel2, UpdatePanel2.GetType(), "Open window", "openWinNavigateUrl(); return false;", true);
RadScriptManager.RegisterStartupScript(this, this.GetType(), "tabSelectedScript", "openWinNavigateUrl();", true);
}
}
Take a look at the following resources, they will help you either do it this way, or even improve:
http://www.telerik.com/community/forums/aspnet-ajax/window/opening-radwindow-from-the-server.aspx
http://demos.telerik.com/aspnet-ajax/controls/examples/integration/gridandwindow/defaultcs.aspx?product=window
Related
I am using ASP.NET UpdatePanel for partial postback. Somehow after the server side postback (ddl_SelectedIndexChanged), the value set by a Javascript function (lblTotal's value of 100) gets removed. Is there anyway to preserve value set by the Javascript function?
JavaScript:
<script type="text/javascript">
function calculateTotal() {
var lblTotal = document.getElementById("<%= lblTotal.ClientID%>");
lblTotal.innerHTML = "100";
}
</script>
HTML:
<asp:UpdatePanel ID="UpdateGrid" runat="server">
<ContentTemplate>
<asp:DropDownList ID="ddl" runat="server" OnTextChanged="ddl_SelectedIndexChanged" AutoPostBack="true" />
<asp:CheckBox ID="chkLevels" runat="server" onclick="calculateTotal()" />
<asp:Label ID="lblTotal" runat="server" />
</ContentTemplate>
</asp:UpdatePanel>
C# / Code Behind:
protected void ddl_SelectedIndexChanged(object sender, EventArgs e)
{
// Some code
}
The problem is here is that when you change data with calculateTotal in Javascript, server does not know about changes since you don't post back data to server.
So you need to trigger the postback event with __doPostBack():
Client side:
function calculateTotal() {
var lblTotal = document.getElementById("<%= lblTotal.ClientID%>");
//Calculation
var totalValue = "100";
__doPostBack('chkLevels', totalValue);
}
Page_Load on Server side :
protected void Page_Load(object sender, EventArgs e)
{
if (Request["__EVENTTARGET"] == "chkLevels")
{
var totalValue = Request["__EVENTARGUMENT"];
lblTotal.Text = totalValue;
}
}
See: how to use __doPostBack function in asp.net
I am using Devexpress controls in asp.net c#.
I have a GridView with a CustomButtonColumn. When I click on that button it performs a callback and gets the row key. There I set a Session variable with the row key.
On Page2 I want to use that Session to bind a parameter in a XtraReport.
[C#]
Page1
<script type="text/javascript">
function OnClick(s, e) {
if (e.buttonID == "SF") {
//Session["parameter_id"] = e.visibleIndex;
// gridAdmin.GetRowValues(gridAdmin.GetFocusedRowIndex(), 'ID', OnGetRowValues);
sf.PerformCallback(e.visibleIndex);
window.location = "PrintView.aspx";
}
}
</script>
<dx:ASPxPopupControl ID="ASPxPopupControl3" runat="server" CloseAction="CloseButton" ClientInstanceName="pcSF"
AllowDragging="True" PopupAnimationType="None" Modal="True" PopupHorizontalAlign="WindowCenter" PopupVerticalAlign="WindowCenter"
CssClass="panel1" Style="font-size: 20px" CloseOnEscape="true" HeaderText="SF">
<HeaderStyle BackColor="#FF8000" Font-Bold="True" HorizontalAlign="Center" />
<ContentCollection>
<dx:PopupControlContentControl>
<dx:ASPxCallbackPanel ID="pnlSF" runat="server" BackColor="White" ClientInstanceName="sf" OnCallback="pnlSF_Callback" >
<PanelCollection>
<dx:PanelContent>
</dx:PanelContent>
</PanelCollection>
</dx:ASPxCallbackPanel>
</dx:PopupControlContentControl>
</ContentCollection>
</dx:ASPxPopupControl>
protected void pnlSF_Callback(object sender, CallbackEventArgsBase e)
{
Session["parameter_id"] = GridViewAdmin.GetRowValues(Convert.ToInt32(e.Parameter), "ID").ToString();
// Response.Redirect("PrintView.aspx");
}
Page 2
protected void Page_Load(object sender, EventArgs e)
{
XtraReport1 repTest = new XtraReport1();
repTest.RequestParameters = false;
repTest.parameter1.Value = Session["parameter_id"];
repTest.parameter1.Visible = false;
repTest.CreateDocument();
this.ASPxDocumentViewer1.Report = repTest;
this.ASPxDocumentViewer1.DataBind();
}
When I click on that custom button from gridview and loads page2 it appears this error.
Why?
I saw that on debug when that error appears the callback is not done. It does not enter in pnlSF_Callback() function.
I have a Repeater which i am bounding some data to it. Now my problem is how i can refer to the data I have in my label in the repeater from the javascript. My code is the following;
CODEBEHIND
protected void Page_Load(object sender, EventArgs e)
{
// bool boolfound = false;
string connstring = String.Format("Server=localhost; Port=5432; User Id=postgres; Password=database; Database=valletta;");
using (NpgsqlConnection conn = new NpgsqlConnection(connstring))
{
try
{
conn.Open();
NpgsqlCommand cmd = new NpgsqlCommand("select get_points('temp_intersect', 'point','id',17339)", conn);
NpgsqlDataReader dr = cmd.ExecuteReader();
currentpoint.DataSource = dr;
currentpoint.DataBind();
}
catch (Exception)
{
ClientScript.RegisterStartupScript(this.GetType(), "", "$(document).ready(function(){alert('problem with connection')});", true);
}
}
}
ASP
<asp:Repeater ID="currentpoint" runat="server">
<ItemTemplate>
<div>
<asp:Label ID="hiddenlabel" runat="server" Text='<%# Eval("get_points")%>' Visible="false">
</asp:Label>
</div>
</ItemTemplate>
</asp:Repeater>
You can change the ClientIDMode to Predictable or static, works well with javascript.
Read this post
Try this one:
document.getElementById('<%=currentpoint.FindControl("hiddenlabel").ClientID%>')
I am trying to call a javascript function from onClick event of an asp server button. I have this button and a label in an update panel.
In aspx:
<asp:ScriptManager ID="ScriptManager1" runat="server">
</asp:ScriptManager>
<asp:UpdatePanel ID="UpdatePanel1" runat="server" UpdateMode="Conditional">
<ContentTemplate>
<asp:Button ID="Button1" runat="server"
style="z-index: 1; left: 49px; top: 119px; position: absolute; height: 26px;" Text="Button"
onclick="Button1_Click"/>
<asp:Label ID="Label1" runat="server" Text="l1"
style="position:absolute; top: 123px; left: 127px;"></asp:Label>
</ContentTemplate>
</asp:UpdatePanel>
Code behind:
protected void Button1_Click(object sender, EventArgs e)
{
ScriptManager.RegisterClientScriptBlock(this, typeof(Button), "me", "me()", true);
}
Javascript in aspx:
<script type="text/javascript">
function me()
{
document.getElementById('<%= Label1.ClientID %>').value="clicked";
}
</script>
All I am trying to do is on button click the label's value should be changed to 'clicked', which isn't happening and no error as well in firebug. Where am I wrong in the me( )?
P.S: I am doing this to learn calling a javascript function from code behind. So any optimizations to the code are also welcome. (I actually have much lot of code to implement in the JS function later so appropriate suggestions please)
As far as I remember the Label control is rendered as a <div> or <span> (can't remember exactly), not a text input field. So you should be setting its innerHTML property not the value:
document.getElementById('<%= Label1.ClientID %>').innerHTML = 'clicked';
or simply do it on the server side instead of registering clientside callbacks:
protected void Button1_Click(object sender, EventArgs e)
{
Label1.Text = "clicked";
}
UPDATE:
As requested in the comments section here's how you could pass parameters to the clientside callback from the server:
protected void Button1_Click(object sender, EventArgs e)
{
string param1 = ...
double param2 = ...
int param3 = ...
var serializer = new JavaScriptSerializer();
ScriptManager.RegisterClientScriptBlock(
this,
typeof(Button),
"me",
string.Format("me({0})", serializer.Serialize(new { param1 = param1, param2 = param2, param3 = param3 })),
true
);
}
and your callback:
function me(values) {
// you could use values.param1, values.param2, values.param3, ... here
}
<asp:UpdatePanel ID="UpdatePanel2" runat="server"
OnLoad="UpdatePanel2_Load" UpdateMode="Conditional">
<ContentTemplate>
<script type="text/javascript">
myFunction();
</script>
<asp:Label ID="Label1" runat="server" Text="1" Width="18px"></asp:Label>
</ContentTemplate>
</asp:UpdatePanel>
C#:
if(condition)
{
UpdatePanel2.Update();
}
protected void UpdatePanel2_Load(object sender, EventArgs e)
{
Label1.Text += 1;
}
the Label1's value is changing but it doesn't call myFunction(). I want to call it one more time after the some condition but not using setTimeout to auto call, some ideas?
When the UpdatePanel updates the DOM and rewrites script blocks into the DOM, they are not re-executed. You need to get on the client-side event that fires after the UpdatePanel is finished and re-execute your JS blocks:
<script type="text/javascript">
function handleEndRequest(sender, args)
{
var panel = document.getElementById(sender._postBackSettings.panelID);
var scripts = panel.getElementsByTagName('script');
for(var i=0;i<scripts.length;i++) {
eval(scripts[i].innerHTML);
}
}
Sys.WebForms.PageRequestManager.getInstance().add_endRequest(handleEndRequest);
</script>
I have made it works by refreshing the whole page