I have set the following in my ascx file :
<asp:UpdatePanel ID="UpdatePanel2" runat="server">
<ContentTemplate>
<asp:Button ID="from_dispo_to_affich" runat="server" OnClick="from_dispo_to_affich_Click"/>
</ContentTemplate>
</asp:UpdatePanel>
My problem is that the OnClick event doesn't trigger.
You want to make a javascript function call right?
Change OnClick to OnClientClick. And put () after your function.
OnClientClick="from_dispo_to_affich_Click()"
Otherwise put this event in your codebehind
protected void from_dispo_to_affich_Click(object sender, EventArgs e)
{
// do something
}
Related
I am experiencing off behaviour when trying to update an UpdatePanel via JavaScript when multiple UpdatePanels are on the page.
Will try to keep it short:
I'm already setting the UpdateMode to Conditional
I am passing in the correct ClientID of the UpdatePanel into the __EventTarget
In the code-behind, I am successfully able to find the target control
But for some reason, the OnLoad of every UpdatePanel on the page is fired.
Below is a snippet of code - any idea why this is happening?
Ascx:
<div class="updatePanelWrapper">
<asp:UpdatePanel ID="UpdatePanel1" UpdateMode="Conditional" RenderMode="Inline" OnLoad="UpdatePanel1Load"
runat="server">
<ContentTemplate>
<asp:Panel ID="Panel1" runat="server">
</asp:Panel>
</ContentTemplate>
</asp:UpdatePanel>
</div>
<div class="updatePanelWrapper">
<asp:UpdatePanel ID="UpdatePanel2" UpdateMode="Conditional" RenderMode="Inline" OnLoad="UpdatePanel2Load"
runat="server">
<ContentTemplate>
<div>
<asp:Panel ID="Panel2" runat="server">
</asp:Panel>
</div>
</ContentTemplate>
</asp:UpdatePanel>
</div>
CodeBehind:
protected void UpdatePanel1Load(object sender, EventArgs e)
{
UpdatePanelLoad(sender, e);
}
protected void UpdatePanel2Load(object sender, EventArgs e)
{
UpdatePanelLoad(sender, e);
}
protected void UpdatePanelLoad(object sender, EventArgs e)
{
// if only a async postback then load the control
if (ScriptManager.GetCurrent(Page).IsInAsyncPostBack)
{
// Some Logic ...
}
}
JavaScript (where I'm triggering the ASYNC PostBack):
var updatePanelWrappers = $(".updatePanelWrapper");
var availableWrapper = updatePanelWrappers[0];
var updatePanelElement = $(availableWrapper).children()[0];
var updatePanelId = $(updatePanelElement).attr("id");
window.__doPostBack(updatePanelId, "Some Arguments...");
With an UpdatePanel callback the page still goes through most of its lifecycle; which includes all of the Load events.
I have placed a user control inside update panel after doing asynchronous postback of page associated js file of that user control is not working so that is there any method to exclude a control from updatepanel in another word i don't want to post that user control.
<asp:UpdatePanel ID="upPnlAnswerList" runat="server">
<ContentTemplate>
// another code that required to placed inside updatepanel
<div id="miancontainer" class="containerr"
<klmsuc:Share ID="shareUserControl" runat="server" />
// another code that required to placed inside updatepanel
</div>
Use a PostBackTrigger to perform exclusion rather than having to specify a large number of includes.
<asp:UpdatePanel ID="UpdatePanel1" runat="server">
<ContentTemplate>
<asp:LinkButton ID="lnkExport" runat="server" OnClick="lnkExport_Click" Text="Export Data"></asp:LinkButton>
</ContentTemplate>
<Triggers>
<asp:PostBackTrigger ControlID="lnkExport" />
</Triggers>
</asp:UpdatePanel>
Set UpdateMode=Conditional and provide exclusive Triggers for the UpdatePanel.
See:
http://msdn.microsoft.com/en-us/library/bb386454.aspx
you must add some controls in code behind and in the right event and register it for exclusion(postback) instead and AsyncPostBack which is a ajax call.
ScriptManager.GetCurrent(this).RegisterPostBackControl(btnAdd);
https://stackoverflow.com/a/23036830/184572
protected void grdExpense_RowCreated(object sender, GridViewRowEventArgs e)
{
LinkButton btnAdd = (LinkButton)e.Row.Cells[0].FindControl("btnAdd");
if (btnAdd != null)
{
ScriptManager.GetCurrent(this).RegisterPostBackControl(btnAdd);
}
}
look for another similar page which excludes all the controls in a gridview
http://www.aspsnippets.com/Articles/Assign-PostBack-Trigger-Full-PostBack-for-LinkButton-inside-GridView-within-AJAX-UpdatePanel-in-ASPNet.aspx
private void RegisterPostBackControl()
{
foreach (GridViewRow row in GridView1.Rows)
{
LinkButton lnkFull = row.FindControl("lnkFull") as LinkButton;
ScriptManager.GetCurrent(this).RegisterPostBackControl(lnkFull);
}
}
I have an ASP page with an asp:DropDownList (with AutoPostBack="true") so that when the user changes it, it reload the appropriate data.
Under that control i have a list of UserControls, that includes a tinymce editor (tied to an asp:TextBox) and an asp:ImageButton to save the data.
When clicking on the ImageButton, the applications send the postback data via ajax to the same page (__EVENTARGUMENT, __EVENTTARGET, etc...). Why does it load that ajax page, and how do i prevent it? I'm updating the value in the DB in the OnClick event handler on the ImageButton, so all I need to do, is get ride of that ajax call.
Any ideas?
Solution 1
<asp:ImageButton ID="btn" runat="server" ImageUrl="~/images/yourimage.jpg"
OnClientClick="return false;" />
OR
Solution 2
<asp:ImageButton ID="btn" runat="server" ImageUrl="~/images/yourimage.jpg"
OnClientClick="yourmethod(); return false;" />
In addition (solution 2), your javascript method may be in this form
<script type="text/javascript">
function yourmethod() {
__doPostBack (__EVENTTARGET,__EVENTARGUMENT); //for example __doPostBack ('idValue',3);
}
</script>
in code behind
protected void Page_Load(object sender, System.EventArgs e)
{
if (this.IsPostBack) {
string eventTarget = this.Request("__EVENTTARGET") == null ? string.Empty : this.Request("__EVENTTARGET");
string eventArgument = this.Request("__EVENTARGUMENT") == null ? string.Empty : this.Request("__EVENTARGUMENT");
}
}
You've not stated you're using an UpdatePanel but this is presumably how you've implemented ajax calls. If so you need to add a trigger to exclude the imagebutton event from ajax:
<asp:UpdatePanel ID="UpdatePanel1" runat="server" UpdateMode="Conditional">
<Triggers>
<asp:PostBackTrigger ControlID="ImageButton" />
</Triggers>
<ContentTemplate> </ContentTemplate>
</asp:UpdatePanel>
I have a user control which contains some buttons and a placeholder. Those buttons cause controls to be added/removed from placeholder. Everything works fine.
Now I want to put this user control in a page, and wrap it in an updatepanel like so:
<asp:UpdatePanel ChildrenAsTriggers="true" ID="UpdatePanelFoo" runat="server" UpdateMode="Conditional">
<ContentTemplate>
<grid:tablegrid ID="tablegrid_chapters" runat="server" SomeProperty="bar" />
</ContentTemplate>
</asp:UpdatePanel>
When I run the page, it's still doing a full postback when I hit one of the buttons inside the user control. What am I doing wrong, and how can I remedy this?
Update:
protected void Page_Init()
{
ScriptManager scr = ScriptManager.GetCurrent(this.Page);
Response.Write("EnablePartialRendering: " + scr.EnablePartialRendering);
}
Outputs "EnablePartialRendering: true"
Make sure you have EnablePartialRendering=true on your ScriptManager in the page.
Update
It looks like your UserControl has no events to be looking for...you have 2 options here. Move the UpdatePanel inside the UserControl .ascx so it can see the button events as children to rig up or add an event for it to see, to do that try something like this:
public event EventHandler Click;
void btn_del_Click(object sender, EventArgs e)
{
if (NumberOfRowControls > 0)
{
var rowToWhack = panel_rows.Controls.Children().Single(x => x.ID == "myrow" + (NumberOfRowControls - 1));
panel_rows.Controls.Remove(rowToWhack);
NumberOfRowControls--;
}
if(Click != null) Click(this, e);
}
void btn_add_Click(object sender, EventArgs e)
{
var row = NewRow(NumberOfRowControls);
panel_rows.Controls.Add(row);
if(Click != null) Click(this, e);
}
And update the UpdatePanel to be looking for it:
<asp:UpdatePanel ID="UpdatePanelFoo" runat="server" UpdateMode="Conditional">
<ContentTemplate>
<grid:tablegrid ID="tablegrid_chapters" runat="server" SomeProperty="bar" />
</ContentTemplate>
<Triggers>
<asp:AsyncPostBackTrigger ControlID="tablegrid_chapters" EventName="Click">
</Triggers>
</asp:UpdatePanel>
Make sure you add a ScriptManager as well to the page, otherwise there's no UpdatePanel functionality.
I have a gridview that is only shown in a modal popup. right before I call the modal popup I set a value in a textbox. The gridview inside the modal popup depends on that textbox's value for it's data to show up at all. SO onclick I want to reload the gridview so that it will reload with the textbox's value. Any ideas?
Essentially... Using update panel, the button press event should trigger the partial postback where your query is rerun that would then allow you to do another databind on your grid. THis would all be followed by a modalPopUp.Show()...
CODE BEHIND
protected void btnAdd_Click(object sender, EventArgs e)
{
if(!String.IsNullOrEmpty(this.txtMyValue.Text))
{
AddValue(this.txtMyValue.Text);
UpdateGrid();
this.UpdatePanel1.Update();
}
else
{
//ooooops
}
}
private void AddValue(String str)
{
DataAccess.AddSomeValue(str);
}
private void UpdateGrid()
{
this.GridView1.DataSource = DataAccess.GetData();
this.GridView1.DataBind();
}
FRONT END
<asp:UpdatePanel ID="UpdatePanel1" runat="server" updatemode="Conditional">
<ContentTemplate>
<asp:TextBox id="TextBox1" runat="server" />
<asp:Button id="btnAdd" OnClick="btnAdd_Click" runat="Server">
<div id="MyModalArea">
<asp:GridView id="GridView1" runat="Server" ..... >
</asp:GridView>
</div>
</ContentTemplate>
</asp:UpdatePanel>
Put popup window content (grid and the rest there is) in separate aspx page and then when you initialize popup window, send textbox value as parameter:
MyPopupWindowContent.aspx?TextBoxValue=something