Hi it just so happens that I have to need this kind of approach (or any suggestion if you have)
this code produce table
while (rd.Read())
{
resultsHtml.Append("<tr class='odd gradeX'>");
resultsHtml.Append("<td>" + rd["region_location"].ToString() + "</td>");
resultsHtml.Append("<td>" + rd["region_tag"].ToString() + "</td>");
resultsHtml.Append("<td class='center'>");
resultsHtml.Append("<div class='tooltip-demo'>");
resultsHtml.Append("<a class='btn btn-info' href='regionEdit.aspx?id=" + rd["region_id"].ToString() + "'><i class='fa fa-paw'></i></a> ");
resultsHtml.Append("<asp:Button ID='btnDelete' runat='server' Text='Login' CssClass='btn btn-outline btn-primary' Style='width: 100px;' OnClick='btnDelete_Click' />");
resultsHtml.Append("</div>");
resultsHtml.Append("</td>");
resultsHtml.Append("</tr>");
}
if you will notice there is an asp:button there. because i want that if the user clicks that button, it will just delete it. So I put an
public void btnSubmitDelete_Click(object sender, EventArgs e)
{
}
but the things is. It is not displaying and I can't figure out how to put the region_id in the asp:button to determine which is which to delete and every loop of the while. Please help
i think when u want to add an asp control and show that control to end user u should add dynamically control to a placeholder or panel like this code :
<asp:PlaceHolder runat="server" ID="_plchControles"></asp:PlaceHolder>
and in code bihind :
var btn = new System.Web.UI.WebControls.Button();
btn.Text = "sample";
btn.ID = "btnSubmitDelete";
btn.OnClientClick += btnSubmitDelete_Click;
_plchContent.Controls.Add(btn);
Your script will work as HTML control and you can bind click event from Javascript. To do so define a WebMethod in c# and call it from Javascript click event.
e.g.
$("#btnDelete").on("click",function(e)
{
var para=[]
para.param1=val1;
para.param2=val2;
$.post("/path/delete",para,function(result)
{
});
});
C#
[WebMethod]
public void delete(string param1,string param2)
{
//Delete code here
}
else
mohammadreza izadi answers will work if you want to asp.net control but you have to make object of button as defined not string.
I have an asp .net hyperlink control declared like this:
<li runat="server" id="liveChatCtrl" Visible="false"><asp:LinkButton runat="server" ID="hlnkLiveChat" CausesValidation="false" OnClick="hlnkLiveChat_Click">Live Chat Support <i class="icon icon_next_03 fr"></i><i runat="server" id="iconChat" class="icon_chat_online"></i></asp:LinkButton></li>
My problem is that the contents of the linkbutton disappears on postback. Any ideas why this is happening?
On load I execute the following code on the linkbutton or it's children:
string absoluteURL = UtilManager.Settings.Item(Utils.BrandID, "URL:absoluteURL");
string chatLink = "StartChat.aspx";
if (HttpContext.Current.User.Identity.IsAuthenticated)
chatLink = "LiveChat.aspx";//~/
//else
// chatLink = "SalesChat.aspx";
string link = absoluteURL + chatLink;
hlnkLiveChat.Attributes["onclick"] = string.Format("javascript:window.open( '{0}', 'chat', 'status=no,toolbar=no,menubar=no,location=no,scrollbars=yes,resizable=yes,height=505,width=420,left=30,top=30');", link);//"openPopup('" + link + "','chat'); return false;";
liveChatCtrl.Visible = true;
A guess...
I believe you may have the code in your Page_Load (or Init) inside an if(!IsPostBack)
If this is the case, move it outside of this if statement as you need it to run as your default visible for your liveChatCtrl is false
Either that or re-code a little so that your default visible is true and you run a check on postback to hide it if needed.
I need to move this new button into this DIV that already exists. This seems to me like it should work but doesn't. What am I doing wrong?
Button button5 = new Button();
button5.Text = "Five";
button5.CssClass = "buttonCSS";
button5.Click += new EventHandler(button5_Click);
button5.ID = "button5";
this.Controls.Add(button5);
string myscript = #"
var navFooter = document.getElementById('NavFooter');
var button5 = document.getElementById('button5');
navFooter.Controls.Add(button5);
";
Page.ClientScript.RegisterStartupScript(this.GetType(), "MyScript", myscript, true);
I know the two objects are being found. Any ideas?
(Note: I cannot use jQuery.)
Thank you.
Controls.Add() is C#, not JavaScript. To append an element to another element with JavaScript, use appendChild():
navFooter.appendChild(button5);
Why are you doing this through javascript?
If you change the containing <div> to a <asp:Panel>, then you can add the newly created button straight into this panel. The <asp:Panel> is rendered simply as a <div> html element, and you can add the CssClass to this to keep the styles the same.
Gives you overall greater control on the server side and you don't need to worry about the javascript. Especially since you are doing server side work anyway.
Just add runat="server" to the div, and add it in the code behind:
<div id="dvButtonContainer" runat="server" ... >
Another option is to use a Panel, as it outputs a div anyway:
<asp:Panel ID="dvButtonContainer" runat="server" ... >
And in the code behind:
Button button = new Button();
dvButtonContainer.Controls.Add(button);
EDIT: Since DIV is not accessible, here is a workaround:
Button Button1 = new Button();
Page.ClientScript.RegisterStartupScript(this.GetType(), "MyScript", String.Format("document.getElementById(\"div1\").appendChild({0});", Button1.UniqueID), true);
I need my MasterPage to be able to get ControlIDs of Controls on ContentPages, but I cannot
use <%= xxx.CLIENTID%> as it would return an error as the control(s) might not be loaded by the contentplaceholder.
Some controls have a so called BehaviourID, which is exactly what I would need as they can be directly accessed with the ID:
[Asp.net does always create unique IDs, thus modifies the ID I entered]
Unfortunately I need to access
e.g. ASP.NET Control with BehaviouraID="test"
....
document.getElementById("test")
if I were to use e.g. Label control with ID="asd"
....
document.getElementById('<%= asd.ClientID%>')
But if the Labelcontrol isn't present on the contentpage, I of course get an error on my masterpage.
I need a solution based on javascript. (server-side)
Thx :-)
You could use jQuery and access the controls via another attribute other than the ID of the control. e.g.
<asp:Label id="Label1" runat="server" bid="test" />
$('span[bid=test]')
The jQuery selector, will select the span tag with bid="test". (Label renders as span).
Best solution so far:
var HiddenButtonID = '<%= MainContent.FindControl("btnLoadGridview")!=null?
MainContent.FindControl("btnLoadGridview").ClientID:"" %>';
if (HiddenButtonID != "") {
var HiddenButton = document.getElementById(HiddenButtonID);
HiddenButton.click();
}
Where MainContent is the contentplace holder.
By http://forums.asp.net/members/sansan.aspx
You could write an json-object with all the control-ids which are present on the content-page and "register" that object in the global-scope of your page.
Some pseudo pseudo-code, because I can't test it at the moment...
void Page_Load(object sender,EventArgs e) {
System.Text.StringBuilder clientIDs = new System.Text.StringBuilder();
IEnumerator myEnumerator = Controls.GetEnumerator();
while(myEnumerator.MoveNext()) {
Control myControl = (Control) myEnumerator.Current;
clientIDs.AppendFormat("\t\"{0}\" : \"{1}\",\n", myControl.ID, myControl.ClientID);
}
page.ClientScript.RegisterStartupScript(page.GetType(),
"ClientId",
"window.ClientIDs = {" + clientIDs.ToString().Substring(0, clientIDs.ToString().Length - 2) + "};",
true);
}
It sounds like your issue is that you are using the master page for something it wasn't intended. The master page is a control just like any other control, and therefore cannot access any of the controls of its parent (the page). More info:
ASP.Net 2.0 - Master Pages: Tips, Tricks, and Traps
My suggestion is to inject the JavaScript from your page where the controls can actually be resolved. Here is a sample of how this can be done:
#Region " LoadJavaScript "
Private Sub LoadJavaScript()
Dim sb As New StringBuilder
'Build the JavaScript here...
sb.AppendFormat(" ctl = getObjectById('{0});", Me.asd.ClientID)
sb.AppendLine(" ctl.className = 'MyClass';")
'This line adds the javascript to the page including the script tags.
Page.ClientScript.RegisterClientScriptBlock(Me.GetType, "MyName", sb.ToString, True)
'Alternatively, you can add the code directly to the header, but
'you will need to add your own script tags to the StringBuilder before
'running this line. This works even if the header is in a Master Page.
'Page.Header.Controls.Add(New LiteralControl(sb.ToString))
End Sub
#End Region
I want to do a Response.Redirect("MyPage.aspx") but have it open in a new browser window. I've done this before without using the JavaScript register script method. I just can't remember how?
I just found the answer and it works :)
You need to add the following to your server side link/button:
OnClientClick="aspnetForm.target ='_blank';"
My entire button code looks something like:
<asp:LinkButton ID="myButton" runat="server" Text="Click Me!"
OnClick="myButton_Click"
OnClientClick="aspnetForm.target ='_blank';"/>
In the server side OnClick I do a Response.Redirect("MyPage.aspx"); and the page is opened in a new window.
The other part you need to add is to fix the form's target otherwise every link will open in a new window. To do so add the following in the header of your POPUP window.
<script type="text/javascript">
function fixform() {
if (opener.document.getElementById("aspnetForm").target != "_blank") return;
opener.document.getElementById("aspnetForm").target = "";
opener.document.getElementById("aspnetForm").action = opener.location.href;
}
</script>
and
<body onload="fixform()">
You can use this as extension method
public static class ResponseHelper
{
public static void Redirect(this HttpResponse response, string url, string target, string windowFeatures)
{
if ((String.IsNullOrEmpty(target) || target.Equals("_self", StringComparison.OrdinalIgnoreCase)) && String.IsNullOrEmpty(windowFeatures))
{
response.Redirect(url);
}
else
{
Page page = (Page)HttpContext.Current.Handler;
if (page == null)
{
throw new InvalidOperationException("Cannot redirect to new window outside Page context.");
}
url = page.ResolveClientUrl(url);
string script;
if (!String.IsNullOrEmpty(windowFeatures))
{
script = #"window.open(""{0}"", ""{1}"", ""{2}"");";
}
else
{
script = #"window.open(""{0}"", ""{1}"");";
}
script = String.Format(script, url, target, windowFeatures);
ScriptManager.RegisterStartupScript(page, typeof(Page), "Redirect", script, true);
}
}
}
With this you get nice override on the actual Response object
Response.Redirect(redirectURL, "_blank", "menubar=0,scrollbars=1,width=780,height=900,top=10");
Contruct your url via click event handler:
string strUrl = "/some/url/path" + myvar;
Then:
ScriptManager.RegisterStartupScript(Page, Page.GetType(), "popup", "window.open('" + strUrl + "','_blank')", true);
Because Response.Redirect is initiated on the server you can't do it using that.
If you can write directly to the Response stream you could try something like:
response.write("<script>");
response.write("window.open('page.html','_blank')");
response.write("</script>");
The fixform trick is neat, but:
You may not have access to the code
of what loads in the new window.
Even if you do, you are depending on
the fact that it always loads, error
free.
And you are depending on the fact
that the user won't click another
button before the other page gets a
chance to load and run fixform.
I would suggest doing this instead:
OnClientClick="aspnetForm.target ='_blank';setTimeout('fixform()', 500);"
And set up fixform on the same page, looking like this:
function fixform() {
document.getElementById("aspnetForm").target = '';
}
You can also use in code behind like this way
ClientScript.RegisterStartupScript(this.Page.GetType(), "",
"window.open('page.aspx','Graph','height=400,width=500');", true);
This is not possible with Response.Redirect as it happens on the server side and cannot direct your browser to take that action. What would be left in the initial window? A blank page?
popup method will give a secure question to visitor..
here is my simple solution: and working everyhere.
<script type="text/javascript">
function targetMeBlank() {
document.forms[0].target = "_blank";
}
</script>
<asp:linkbutton runat="server" ID="lnkbtn1" Text="target me to blank dude" OnClick="lnkbtn1_Click" OnClientClick="targetMeBlank();"/>
<asp:Button ID="btnNewEntry" runat="Server" CssClass="button" Text="New Entry"
OnClick="btnNewEntry_Click" OnClientClick="aspnetForm.target ='_blank';"/>
protected void btnNewEntry_Click(object sender, EventArgs e)
{
Response.Redirect("New.aspx");
}
Source: http://dotnetchris.wordpress.com/2008/11/04/c-aspnet-responseredirect-open-into-new-window/
If you can re-structure your code so that you do not need to postback, then you can use this code in the PreRender event of the button:
protected void MyButton_OnPreRender(object sender, EventArgs e)
{
string URL = "~/MyPage.aspx";
URL = Page.ResolveClientUrl(URL);
MyButton.OnClientClick = "window.open('" + URL + "'); return false;";
}
You can also use the following code to open new page in new tab.
<asp:Button ID="Button1" runat="server" Text="Go"
OnClientClick="window.open('yourPage.aspx');return false;"
onclick="Button3_Click" />
And just call Response.Redirect("yourPage.aspx"); behind button event.
I always use this code...
Use this code
String clientScriptName = "ButtonClickScript";
Type clientScriptType = this.GetType ();
// Get a ClientScriptManager reference from the Page class.
ClientScriptManager clientScript = Page.ClientScript;
// Check to see if the client script is already registered.
if (!clientScript.IsClientScriptBlockRegistered (clientScriptType, clientScriptName))
{
StringBuilder sb = new StringBuilder ();
sb.Append ("<script type='text/javascript'>");
sb.Append ("window.open(' " + url + "')"); //URL = where you want to redirect.
sb.Append ("</script>");
clientScript.RegisterClientScriptBlock (clientScriptType, clientScriptName, sb.ToString ());
}
Here's a jQuery version based on the answer by #takrl and #tom above. Note: no hardcoded formid (named aspnetForm above) and also does not use direct form.target references which Firefox may find problematic:
<asp:Button ID="btnSubmit" OnClientClick="openNewWin();" Text="Submit" OnClick="btn_OnClick" runat="server"/>
Then in your js file referenced on the SAME page:
function openNewWin () {
$('form').attr('target','_blank');
setTimeout('resetFormTarget()', 500);
}
function resetFormTarget(){
$('form').attr('target','');
}
I used Hyperlink instead of LinkButton and it worked just fine, it has the Target property so it solved my problem. There was the solution with Response.Write but that was messing up my layout, and the one with ScriptManager, at every refresh or back was reopening the window. So this is how I solved it:
<asp:HyperLink CssClass="hlk11" ID="hlkLink" runat="server" Text='<%# Eval("LinkText") %>' Visible='<%# !(bool)Eval("IsDocument") %>' Target="_blank" NavigateUrl='<%# Eval("WebAddress") %>'></asp:HyperLink>
You may want to use the Page.RegisterStartupScript to ensure that the javascript fires on page load.
you can open new window from asp.net code behind using ajax like I did here
http://alexandershapovalov.com/open-new-window-from-code-behind-in-aspnet-68/
protected void Page_Load(object sender, EventArgs e)
{
Calendar1.SelectionChanged += CalendarSelectionChanged;
}
private void CalendarSelectionChanged(object sender, EventArgs e)
{
DateTime selectedDate = ((Calendar) sender).SelectedDate;
string url = "HistoryRates.aspx?date="
+ HttpUtility.UrlEncode(selectedDate.ToShortDateString());
ScriptManager.RegisterClientScriptBlock(this, GetType(),
"rates" + selectedDate, "openWindow('" + url + "');", true);
}
None of the previous examples worked for me, so I decided to post my solution. In the button click events, here is the code behind.
Dim URL As String = "http://www.google/?Search=" + txtExample.Text.ToString
URL = Page.ResolveClientUrl(URL)
btnSearch.OnClientClick = "window.open('" + URL + "'); return false;"
I was having to modify someone else's response.redirect code to open in a new browser.
I used this approach, it doesn't require you to do anything on the popup (which I didn't have access to because I was redirecting to a PDF file). It also uses classes.
$(function () {
//--- setup click event for elements that use a response.redirect in code behind but should open in a new window
$(".new-window").on("click", function () {
//--- change the form's target
$("#aspnetForm").prop("target", "_blank");
//--- change the target back after the window has opened
setTimeout(function () {
$("#aspnetForm").prop("target", "");
}, 1);
});
});
To use, add the class "new-window" to any element. You do not need to add anything to the body tag. This function sets up the new window and fixes it in the same function.
I did this by putting target="_blank" in the linkbutton
<asp:LinkButton ID="btn" runat="server" CausesValidation="false" Text="Print" Visible="false" target="_blank" />
then in the codebehind pageload just set the href attribute:
btn.Attributes("href") = String.Format(ResolveUrl("~/") + "test/TestForm.aspx?formId={0}", formId)
HTML
<asp:Button ID="Button1" runat="server" Text="Button" onclick="Button1_Click" OnClientClick = "SetTarget();" />
Javascript:
function SetTarget() {
document.forms[0].target = "_blank";}
AND codebehind:
Response.Redirect(URL);