i created an asp.net "web application" in VS 2008, building on .NET 2.0 framework. i have a form page with a code behind file. the form is very basic: a table with some text boxes and radio buttons. here is a piece of the form:
[Code]....
I would like to call a javascript function for
<asp:DropDownList ID="AutDrpDownList" runat="server" AutoPostBack="true" OnSelectedIndexChanged="AuthorityDrpDown_SelectedIndexChanged"> ...
I want to call a client side javascript method for validating some controls, before calling server side :
[Code]....
how to implement this. Before going to server itself, i need to perform validation .
I have the following method in a class withing a website.
public static void Authorise(int role, Page callingPage)
{
callingPage.Master.FindControl("divUnauthorised").Visible = true;
callingPage.Master.FindControl("ContentPlaceHolder2").Visible = false;
}
Now this works fine but I really want to just have the one parameter of role and not require the page to pass itself into the method. Is there a way of finding the object that called the method and casting it to a System.Web.UI.Page?
I don't know what I'm making wrong.I have a submit button, and on click it should execute the funktion in the code behind, but I get the error that the funktion is undefined.this is my code in the .aspx webform:
<%@ Page Language="C#" AutoEventWireup="True" MasterPageFile="~/DashMaster.master" CodeBehind="BI_MDR.aspx.cs" Inherits ="BI_MDR.StoredProc"%> [code].......
I am creating an Asp.net web site which will support dynamic data. When I am creating a dynamic web site from Scratch (from template in VS) all is working fine. But when I am trying to add dynamic entity (.edmx) file and running the application I am getting following error
"The method 'Skip' is only supported for sorted input in LINQ to Entities. The method 'OrderBy' must be called before the method 'Skip'. "
In uploading files and determining their length, I want to know if there is any alternative to
<code>
file1.PostedFile.ContentLength
</code>
It seems that this quantity is counted up as the actual uploading is taking place.
Once the customer has selected his file-to-be-uploaded and put it in the textbox, is there any
other way for my script immediately to say "This file is 5 Mb and it is therefore too big" ?
Suppose i have String like this "hgh343", "kjk98". Is there any Function available in .NET that will find the numbers present in the String ? i.e., from first string 343 and from second 98 will be returned.
View 7 RepliesConsider the following code, adding 2 textboxes with the same ID (oops):
protected void Page_Load(object sender, EventArgs e)
{
string TextBoxName = "TextBox1";
Panel p = new Panel();
TextBox t = new TextBox();
t.ID = TextBoxName;
p.Controls.Add(t);
if (p.FindControl(TextBoxName) == null) // <-------*******
{
TextBox t2 = new TextBox();
t2.ID = TextBoxName;
p.Controls.Add(t2);
}
Page.Form.Controls.Add(p);
}
The code is designed to stop adding the same ID twice. However, the Panel.FindControl() method is not finding a control that was added in the previous line of code.
Am I using this in the wrong way?
I mean - sure - I could manually iterate through the controls in the next level, like:
string TextBoxName = "TextBox1";
Panel p = new Panel();
TextBox t = new TextBox();
t.ID = TextBoxName;
p.Controls.Add(t);
TextBox t2 = new TextBox();
t2.ID = TextBoxName;
bool duplicateFound = false;
foreach( Control c in p.Controls )
{
if(c.ID == TextBoxName)
{
duplicateFound = true;
break;
}
}
if( duplicateFound )
{
t2.ID = TextBoxName + "__0";
p.Controls.Add(t2);
}
But I don't understand why this isn't working, whereas Placeholder controls and UserControls work fine.
The reason I am using Panels is for CSS styling. body > div > input - but still - it isn't working.
Is there a method anywhere in the .NET framework or System.Web that will tell me whether a string contains an HTML or is one?
Should I just Server.HtmlEncode(myString) and see if its length is longer than myString's length before encoding?
I have seen 2 methods to handle error in project. One is using try catch in every method and another is using custom page and error log file .I know both method. Which one is the best method?
View 9 RepliesI'm an ASP.NET newbie, but not so new at programming in general.
I'm creating a commercial website, and I want to allow an admin to add new articles (an article consists of text, images and various properties such as category).
I am trying to decide the optimal Modus Operandi. This site is commercial, so SEO is a major consideration. This means that I want each url to be "unique". That is, if someone navigates to an article about raccoons, he should be redirected to [URL]. This means - I can't have one page that loads the appropriate article dynamically a-la AJAX (gotta use deep-linking)
So how exactly do I do this? suppose the admin entered his text, uploaded the images and set the article properties. I create a new subfolder, save the images to the server (I understand that saving images to a DB is a big no-no), their addresses in a DB, and the content itself to the DB. But now what?
How do I go about creating the actual page?
Is there a function for creating a new aspx file? then what about its corresponding cs file? Or is it unwise to use aspx? Maybe plain html? but then how does it work with my site's master page? Or maybe just create another copy of a general aspx file which is populated with an article according to a parameter?
in the client app, i want to handle SOAP exceptions thrown by web service. Currently, when exceptions are thrown by the web service, Detail.OuterXml property of SOAPException class shows below XML data. In code below, what's the correct method to reference namespace, values, etc to get to the error-code, error-field-name, error-message and error-description value?
[Code]....
Code:
[Code]....
I have a datagrid setup where I have a column of checkboxes setup, several informational columns for the user, and a hidden ID column. I have set up the loop to check with checkboxes have been checked, but I am having troubles finding the ID of the row that has been checked. The following code results in a "Object reference not set to an instance of an object" error:
For Each row As GridViewRow In GridView1.Rows
Dim cb As CheckBox = row.FindControl("ParticipantSelector")
If cb IsNot Nothing AndAlso cb.Checked Then
Dim productID As Integer
productID = CType(row.FindControl("ID"), Label).Text
Response.Write("You have selected " & productID & "<br>")
End If
Next
I am sure that I don't have something right here.
I have a gridview where the dropdownlist is built during the RowDataBound event. I need to be able to poup a window based on the selection from the dropdownlist Items.
I cannot use Repsonse.Write("window.open('link');") coz i will need to redirect to the webpage which clears out the search on the page.
I need to be able to open a new window with the link and continue executing code on the page.
I have tried,
1) Page.ClientScript.RegisterStartupScript(Me.GetType(), "openwindow", "window.open('" & link & "');", True)
2) Dim s As System.Windows.Forms.HtmlWindow s.Document.Window.Open(link, "", "", False)
3) Process.Start(link) - this works locally but dosent on the testbox
I have an application where I have a dropdownlist with AppendDataBoundItems set to true. This allows me to add a select all ListItem with a value of "-1". I store the selected value in a session so that the selected value is retained if a user navigates away from the page then returns. This works fine for all values except for when the value is set to the appenddatabound item (All). When I debug i can see that the onselectindexchanged event does not fire when the 'All' item is selected. If a user navigates away from the page and comes back this 'All' value is lost as it is not stored in the session.
find my code below:
<asp:DropDownList ID="ddlTeams" runat="server"
DataSourceID="odsTeams" DataTextField="Team_Name" cssClass="ddl"
DataValueField="TeamID" AutoPostBack="True" AppendDataBoundItems="True"
onselectedindexchanged="ddlTeams_SelectedIndexChanged">
[Code]....
This is realy simple, basic functionality, but for some reason it's not working.
[Code]....
When I debug I notice that the event never is fired.
I have a panelA with a drop down list (ddl1) and a panelB with 2 dropdown lists (ddl2 and ddl3).
I am disabling PanelB in the page_Load section. When a selection has been made in the ddl1 in panelA, I am enabling panelB in OnSelectedIndexChanged event to enable ddl2 and ddl3.
This process is working, but as soon as I make a selection on ddl1, the whole page reloads to enable ddl2 and ddl3, which feels odd. How can I make it just reload panel3 not the whole page? I guess it can be done using AJAX update panel but as soon as I put <%@ Register Assembly="AjaxControlToolkit" namespace="AjaxControlToolkit" tagprefix="ajaxtoolkit" %> and <asp:ScriptManager ID="ScriptManager1" runat="server"></asp:ScriptManager>, I start getting wierd error: Microsoft JScript runtime error: Sys.ArgumentTypeException: Object of type 'Object' cannot be converted to type 'Array'.
Parameter name: array
I have a DropDownList that is supposed to redirect the user to a page when they change the selected index of the DropDownList. I have three parameters that are being passed by this redirecting. The first time the user changes the selectedindex, it does not work. but every time after that it works.
<asp:DropDownList ID="fiscal" runat="server" AutoPostBack="True"
DataSourceID="SqlDataSource3" DataTextField="fiscalno"
DataValueField="fiscalno" style="margin-left: 28px" Width="130px"
onselectedindexchanged="fiscal_SelectedIndexChanged" >
[Code]....
I have a dropdown list that is populated by a dataset (Data being extracted from DB). Based on the selection made by the user I call OnSelectedIndexChanged, and populated the form with the relevent info. The problem I am having is the first item in the list is selected by default, so if the user selects this option OnSelectedIndexChanged does not fire. To work around this I add a default item to the dropdown list after populating it with the dataset as shown here;
jobStandardActList.Items.Insert(0,
jobStandardActList.SelectedIndex = 0;
jobStandardActList.SelectedValue =
"----Select an Item----");"";
This works fine, however if the user selects an item from the list, and then proceeds to selects the default item "----Select Item----" i receive an error. sys.webforms.pagerequestmanagersevererrorexception: an unknown error occured while processing the request on the server. The status code returned from the server was: 500
What I would like to do is:
From a textbox, I add a name for a product and create a object with that name.
The product object is then added to a Dictionary.
Then, I want to bind this Dictionary to a dropdown list.
If I change the selected item, I want to display the number of the chosen product (Default as 0 when I create the product object).
The problem is that when I try to change the item in the dropdown list, nothing happens.
.aspx
<asp:TextBox ID="productText" runat="server"></asp:TextBox>
<asp:Button ID="newProductButton" runat="server" OnClick="newProduct_Click" />
<div>
<asp:DropDownList ID="ddlProducts" runat="server" AutoPostBack="true"
[Code]....
I'm creating an ASP.NET MVC 2 (RTM) project that uses areas. The Index action of the Home controller of one area needs to use RenderAction to generate a sub-section of the page. The action called is also defined in the same Home controller. So the call should just be:
<% Html.RenderAction("List") %>
However, I get an exception:A public action method 'List' was not found on controller 'RareBridge.Web.Areas.Events.Controllers.HomeController'.
Note that I'm not in the "Events" area! I'm in a completely different area. If I remove the "Events" home controller, then the exception still occurs but names a different controller (still not the one I want it to call).
I've also tried providing the controller name and area to the RenderAction method, but the same exception occurs. What is going on here?
BTW: I am using Autofac as my IoC container
I have a radionbuttonlist with 4 options, but none are selected as default (by design).How do I trigger an event when a users selects one for the first time? My onselectedindexCHANGED works fine.
View 3 RepliesI added the extender and when i tried to add the method this message poped up; Cannot create page method "GetCompletionList" because no Code Behind or codefile was found.
View 4 RepliesI have created stored procedure in sql server 2005 and connected that database to asp.net application when i submit a data from application form corresponding stored procedure stored procedure(sp1) giving following error Could not find stored procedure 'sp1'. I have written following code on buttonclick event provide me a solution and point out the error in code if exists
using System;
using System.Configuration;
using System.Data;
using System.Linq;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.HtmlControls;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Xml.Linq;
using System.Data.SqlClient;
public partial class _Default : System.Web.UI.Page
{
DataSet ds = new DataSet();
SqlConnection con;
//Here we declare the parameter which we have to use in our application
SqlCommand cmd = new SqlCommand();
SqlParameter sp12 = new SqlParameter();
SqlParameter sp2 = new SqlParameter();
protected void Page_Load(object sender, EventArgs e)
{
}
protected void Button1_Click(object sender, EventArgs e)
{...............................................................
I have an UpdatePanel with a dropdownlist (countries) and a multi-select listbox (locations). If the user selects a country, the locations for the country get populated. By default, all locations must be selected.
Works absolutely fine, except that if you choose a country, then change the country back to the original value ("All Countries") - the OnSelectedIndexChanged doesn't fire. Page PostBack occurs, tho.
AutoPostback is true, everything else works fine, just can't get the darned event to fire on when the original value is Selected. The result is that the drop-down list gets populated with the default list of locations (for All Countries), but they aren't selected...only the subset from the previously selected country are selected?