ASP.NET Discussion Boards

thanks a million.... just exactly what i wanted......

i wanna make a simple form login with asp.net using ibm db2 ...

but i'm still new do not understand about db2 ,

hope someone can help me and give me simple tutorial ..

thanks first ...

You'll want to find some tutorials or articles on this site for learning ASP.Net and then separately need to learn how to use db2. Once you have something specific you are stuck on let us know.

There are only 10 types of people in the world, those who understand binary and those who don't.

You can see a lot of tutorials in online. here i am sharing one of them. http://www.ibm.com/developerworks/data/library/techarticle/0307swart/0307swart.html[^]

Please up vote if it helped you Smile | :)

Thanks And Regards
Sibeesh

Dear readers,

I have looked around the internet and found loads of tutorials all linking OData Web Api's with Entity Framework support on Databases. But I have a multitude of OData web api's that facilitate the retrieval of data from the backend and I want to supply this data with some additional data manipulation to the outside world.

Is there a tutorial about this somewhere on the web? It can't be that OData WebApi's only exist supplying database data.

Best regards and thanks for your help,
Rémy Samulski

You can still use the Entity Framework using the ObjectContext rather than a DbContext to still work in a familiar paradigm.

MSDN has a brief tutorial here:
http://msdn.microsoft.com/en-us/library/vstudio/bb738471%28v=vs.100%29.aspx[^]

Dear Nathan Minier,

Thx for the link. At first glance I still don't see the whole picture but will try to figure it out tomorrow. Hopefully the brief tutorial will give me enough keywords and hints to solve this puzzle. Will post any findings.

Thx again,
Rémy

guys;
I use onsubmit event to add some data to the request when the form is submitting, but i notice that the handler is called when a submit button is clicked but not when .submit() function is called for the form.
i don't know if this is normal. if so, what else can i try?

another disappointing thing is that i found this sentence in this page[^]
The form's onsubmit event handler (for example, onsubmit="return false;") will not be triggered when invoking this method.

Help people,so poeple can help you.

modified 8-Sep-14 3:28am.

I'll take a stab at this, perhaps I will make some sense here. I think you are confusing a regular HTML page with an asp.net page.

It took me a couple of years to figure out asp.net, and how it handles the submit button.

One of the caveats of asp.net, is that you can only have 1 form tag. So you can't wrap multiple submit buttons with their own form tag, to create multiple default buttons.

Instead asp.net uses a script manager I want to say, I think that is what controls the submit behavior, which in turn writes JavaScript to control form action.

So to create multiple submit buttons, you have to wrap each form area in a container like a panel, and set the default button of that panel to the submit button inside the panel container.

So to answer your question:

On a button control like image button or button
You control the button with

OnClientClick = "run_javascript(); return false;"
Add Handler click Address Of button_click

So you can run JavaScript to validate, run a webservice, and based on what you return, say false, the handler will not fire the button event, or true, the handler will fire the button event.

Now there are ways to control the page submit event, but you have to be more precise as to what you want to do.

In the run_javascript above, you can use JavaScript to reprogram data in text boxes or input elements, that will post back to the server, thus the name input element.

Thank you Sir
My problem was't in validation but in add some data to the request that identify is used to distinguish between request threads associated with the page but not the session.

my problem was that some post request is made by calling the pre-defined function __doPostBack that calls .submit for the form so the event would not be triggered. instead i added a custom validator with a validation function that adds my desired data and not to modify .IsValid value. in this way the framework would call DoBostPackWithOptions instead of __doPostBack so the my custom validation function would be called and when a submit button is clicked the function Page_ClientValidate would be called by triggering on submit event.

Help people,so poeple can help you.

Oh OK, that makes sense to me.

I just call a jquery function using onClientClick and return the value of the function.
I gave up on the Microsoft validation stuff years ago.
I haven't seen a post here for _doPostBack in years, but it was a popular subject at ASPNet.com several years back.

HI All,

Kindly, provide me a code sample how to post a asp.net forms data to a third party API in XML format and handle the out XML in asp.net .

...Hotelbooking API ...

Please its very urgent .

THanks & Regards,
Martin.

I already done it for you, please check you email...

I'm not questioning your powers of observation; I'm merely remarking upon the paradox of asking a masked man who he is. (V)

If you are providing a solution, then you should post it here so others can see it.

It was urgent - so I just forgot the Smile | :)

icon...

I'm not questioning your powers of observation; I'm merely remarking upon the paradox of asking a masked man who he is. (V)

should have known.

Do not repost!
Sample code to post a asp.net forms data to third party API in XML input[^]

Hi,
First up, sorry if I haven't used the correct name for this interface style in the title. I'm not sure if there even is a correct name! What I am trying to do is to have a treeview on the left of the screen and an AJAX panel on the right. When a node is selected, a User Control is added to the panel (different controls depending on the type of the node).

This part works.

My problem is twofold.

1. If I select a node in the tree, the SelectedNodeChanged event fires, and causes the User Control to be correctly displayed. If, however, I click on the node that is already selected, the User Control disappears. I can only assume AJAX is updating the panel, but I can't figure out why. There doesn't appear to be an OnClick event for a TreeView..

2. When I click on the OK or Cancel buttons within my User Control, I want the postback to update my application and then leave the node selected with the User Control still displayed (Obviously, Cancel results in the contents being wiped...) Again, clicking the button causes the User Control to disappear.

Code:
Main Page

ASP.NET

<asp:Content ID="Content2" ContentPlaceHolderID="MainContent" runat="server">
    <div id="HomeLink">
        <asp:HyperLink ID="HyperLink1" runat="server" CssClass="home" ImageUrl="~/Images/105329-3d-glossy-orange-orb-icon-business-home5.png"
            NavigateUrl="~/Default.aspx">
        </asp:HyperLink>
    </div>
    <asp:Panel ID="TreeArea" runat="server" CssClass="TreeArea">
        <%-- Here ExpandDepth="0" for eleminates the expansion of the added treenodes --%>
        <asp:TreeView ID="TreeViewSettings" runat="server" ExpandDepth="0" PopulateNodesFromClient="False"
            CssClass="TreeViewSettings" OnSelectedNodeChanged="TreeViewSettings_SelectedNodeChanged">
        </asp:TreeView>
    </asp:Panel>
    <asp:Panel ID="EditFormArea" runat="server" CssClass="SettingsFormArea">
        <asp:UpdatePanel ID="UpdatePanelEdit" runat="server">
            <ContentTemplate>
                <asp:Panel ID="PanelEdit" runat="server">
                </asp:Panel>
            </ContentTemplate>
            <Triggers>
                <asp:AsyncPostBackTrigger ControlID="TreeViewSettings" EventName="SelectedNodeChanged">
                </asp:AsyncPostBackTrigger>
            </Triggers>
        </asp:UpdatePanel>
    </asp:Panel>
</asp:Content>

C#

protected void TreeViewSettings_SelectedNodeChanged(object sender, EventArgs e)
{
    reload();
}
protected void reload(){
    TreeNode selection = TreeViewSettings.SelectedNode;
    string[] SelectedDetails = selection.Value.Split(new char[] {'|'});
    RegionEditor RegionEditorForm = LoadControl("~/TheSettings/RegionEditor.ascx") as RegionEditor;
    RegionEditorForm.RegionID = int.Parse(SelectedDetails[1]);
    RegionEditorForm.CancelClick += new EventHandler(RegionEditorForm_CancelClick);
    PanelEdit.Controls.Add(RegionEditorForm);
    AsyncPostBackTrigger CancelTrigger = new AsyncPostBackTrigger();
    CancelTrigger.ControlID = RegionEditorForm.UniqueID;
    CancelTrigger.EventName = "CancelClick";
    UpdatePanelEdit.Triggers.Add(CancelTrigger);
}
void RegionEditorForm_CancelClick(object sender, EventArgs e)
{
    reload();
}

User Control:

ASP.NET

<%@ Control Language="C#" AutoEventWireup="true" CodeBehind="RegionEditor.ascx.cs"
    Inherits="Shedulinator.TheSettings.RegionEditor" %>
<% if (false)
   { %>
<link rel="Stylesheet" type="text/css" href="../Styles/Site.css" />
<% } %>
<asp:Image ID="Image1" runat="server" ImageUrl="~/Images/106660-3d-glossy-orange-orb-icon-transport-travel-compass2.png"
    CssClass="SettingsIcon" />
<asp:Panel ID="Panel1" runat="server" CssClass="SettingsFormPanel">
    <asp:Label ID="LabelRegion" runat="server" Text="Region Name:"></asp:Label>
    <asp:TextBox ID="TextBoxRegionName" runat="server"></asp:TextBox>
    <asp:Button ID="ButtonCancel" runat="server" CssClass="SettingsButton" 
        Text="Cancel" onclick="ButtonCancel_Click" />
    <asp:Button ID="ButtonOK" runat="server" CssClass="SettingsButton" Text="OK" 
        onclick="ButtonOK_Click" />
</asp:Panel>

C#

public partial class RegionEditor : System.Web.UI.UserControl
{
    public event EventHandler CancelClick;
    protected void Page_Load(object sender, EventArgs e)
    {
    }
    protected void ButtonCancel_Click(object sender, EventArgs e)
    {
        if (CancelClick != null)
        {
            CancelClick(this, new EventArgs());
        }
    }
}

Ideas, anyone?

Thanks!

The user control wont' persist upon post back, so it goes away.
I think it's in the user control, but I can't tell because there is not code for it.

You may want to start using Page.IsPostback to check the life cycle of the page before loading and unloading things

Member 10409255 wrote:
There doesn't appear to be an OnClick event for a TreeView..

You can program events
SelectAction = TreeNodeSelectAction.Expand

Member 10409255 wrote:
I want the postback to update my application and then leave the node selected

I don't understand that, you want to clear the tree view, or change the selected node?
Turn the visibility off, or change the CSS display to none.
Or change the node selected in code behind.

Thanks for looking at this for me!

jkirkerx wrote:
You can program events

SelectAction = TreeNodeSelectAction.Expand

I'm not sure I follow here. There isn't necessarily an expansion going on. Or does this event fire at other times?

jkirkerx wrote:
I don't understand that, you want to clear the tree view, or change the selected node?

Neither. The tree is to hold information about users, groups and other setup information. If I select a user, then the User Control to view / edit user information is loaded into the right hand pane. At the bottom of the control, I have an OK button and a Cancel button. When I click OK, then I want the back-end database updating (I can do that) but I want the user Node in the tree to remain selected and the User Control to remain visible (due to the user node being selected.)

You can the select action of the node group to 4 choices - Just FYI

TreeNodeSelectAction.Expand -
TreeNodeSelectAction.None
TreeNodeSelectAction.Select - Selecting a node
TreeNodeSelectAction.SelectExpand - I guess expanding a folder

Controls that are made in onInit or PreInit are persistent. They will remain after a postback trip to the server.

Controls that are made after Init, like on Page.Load are not persistent, and will not survive a postback. Even if you load the control again after postback, the data in the textbox will be lost, because it's a new version of the control.

So either you redesign your form, to load the control in Init, so the control stays, or you have to do something else.

I would probably load all the controls, and turn off the visibility. Then on node select, turn on the visibility of the control you need.

You can also use CSS, in which you just toggle the "display" to inline-block or none.

I not sure how you wrote the code, if your using webform, then place all the controls on the form.

If your using code behind to generate the page, then use PreInit, or I think you can override an event using

Protected Overrides Sub OnInit(ByVal e as System.EventArgs)
   'Load your user controls here.
End Sub

Keep in mind, that all controls or HTML markup has to be made in OnInit to persist. You use Page.Load just to populate the data in the HTML markup.

Thank you for all the help!

Turns out that it was a Noob mistake. I hadn't wrapped my head around ViewState and so on. Managed to get it working now Smile | :)

I need to POST a set of XML data to a web device. I'm most familiar with ASPX / c#. Basically the user lands on my page and I retrieve two parameters from the URL and store them as Session Variables (like this):

<script runat="server">
 
  Sub Page_Load()
        dim MA as String
        MA = Request.QueryString("MA")
        Session.Add("MAC_ADDRESS", MA)
        Message.Text = Session("MAC_ADDRESS")
     End Sub
</script>

I realize the above is currently VB, but I'm going to switch this to c# (as I'm more familiar with it). I need to use these session variables to POST XML formatted data to a URL:

POST TO: ([IP_Address]/command.xml)

Example XML:

<?xml version="1.0" ?>
<!DOCTYPE ABC "UserAdd.dtd">
 
<ABC COMMAND="USER_ADD" MAC_ADDR="Session("MAC_ADDRESS")>
  <EXPIRY_TIME UNITS="SECONDS">60</EXPIRY_TIME>
</ABC>

Once the Device receives the command, it sends back a response (OK or Error), I also need to retrieve and verify the response (just a Response.Write to screen would be fine). I've never done anything like this before so any help is greatly appreciated!

Thanks!
Brad

EDIT:

Here is a Javascript version that WORKS. This is based on a form where the user fills out the fields that makeup the XML (I'm only using MAC_ADDRESS right now, none of the others). If Someone Could help me translate whats happening here to c# in a simpler way, I would be MOST appreciative!

function SendXML()
{
	var usg = template.XMLDocument

	clearResults();

	usg.async = false;
	usg.preserveWhiteSpace = false;

	BuildEls(usg);

	document.all("xmlCommand").insertAdjacentText("BeforeEnd",
   		usg.xml);

	var httpOb = new ActiveXObject("Microsoft.XMLHTTP");
	httpOb.Open("POST", usgAddr, false);
	httpOb.send(usg);

   document.all("xmlResponse").insertAdjacentText("BeforeEnd",
   		httpOb.responseXML.xml);
}

modified 5-Sep-14 15:06pm.

Gridview with Textbox Control how to pass JQuery Scrpt
using Asp.net With C#

I don't understand what you are asking.

There are only 10 types of people in the world, those who understand binary and those who don't.