In the following code, you'll see that the method 'getImage' is called and passes in a filepath. I want this filepath to be dependant upon a selection on a previous page- so instead of it constantly being 'properties/cedar', it could be 'properties/eastlodge' for example.
[Code]....
If I use an ImageButton or LinkButton, I just noticed that when clicking either, the Page_Load method executes before the method specified in the OnClick. Can this be avoided so that the method in the OnClick is triggered instead of Page_Load?
View 2 RepliesI am thinking this is a pretty simple problem... but I can not get it to function.I just want to get the calendar control to change a date which subsequently modifies a database select statement. I can get the current code to process without error, but the variable set is always a click earlier. Of course, I want the variable to be set upon any change in the calendar control.
public partial class NewBusinessReport : System.Web.UI.Page
{
protected void Page_Load(object sender, EventArgs e)
{
[code]...
Does this make sense? I just want it so that when SelectionChanged gets fired the Calendar1SelectCommandDate passes the correct date to the Page_Load page. The error I get now is:"The name 'Calendar1SelectCommandDate' does not exist in the current context"I get that the variable does not exist in the context. That actually seems to make sense based on what I have coded; however, I try to get that variable established and I still seem to be headed in the wrong direction.Basically, I have four calendar controls, one for a date (period 1 start, end and then period 2 start, end). I want to set the program so any change in that date sets off a new Select statement into the SQL server.
I have a page with radio buttons and a textarea that populates data dynamically based on your selection. The radio buttons act as a list of article titles and on selection you see the content of the article.
Within my pageload method, I want to allow users to be able to see a URL in their browser that points to value they've. That way they can link to the article within another source.
Currently, the method I have allows me to link to the button selection if I manually type in the following example URLs:
[URL]
[URL]
I'd like to modify this so that the URL appears in the browser when a radio button selection is made. Plus, on page load defaults to the "0" index if no value parameter was specified.
protected void Page_Load(object sender, EventArgs e)
{
if (!IsPostBack)
{
int selected;
if (int.TryParse(Request.QueryString["selected"], out selected))
RadioButtonList1.SelectedIndex = selected;
RadioButtonList1.DataBind();
}
}
protected void RadioButtonList1_SelectedIndexChanged(object sender, EventArgs e)
{
string strRedirect;
strRedirect = "frm_Articles.aspx?selected=" + RadioButtonList1.SelectedIndex;
Response.Redirect(strRedirect);
}
gridview:
<asp:CommandField ShowDeleteButton="false" />
How to change visibility programatically from Page_load method?
It is working on button click , becuase i when store the values from datalist into my database , the values got inserted .. but when i am trying to store those value in temporary datatable its not working
[WebMethod]
public static ProductDetails[] DisplayMessage(string name, string price,string obj, string id) {
string emailid = HttpContext.Current.User.Identity.Name; ;
string date = DateTime.Now.ToString();
string s = HttpContext.Current.User.Identity.Name;
[Code] ....
I would like to run a SQL query on the codebehind VB page that will also set a value from that query to a Session variable. Also, this needs to be done on the Page_Load.
Example:
[Code]....
I create a variable in code behind to save today's date.
[Code]....
And I want to save it as a parameter for an accessDataSource but I'm not finding anywhere that tells me how to do this properly. My attempts thus far have been
[Code]....
I am trying to modify a .ascx file, to declare a variable. I've read that this is normally done in the code behind view, but I do not have access to the code behind, and this is a very small addition. We are using DotNetNuke, and in the .ascx file I have written
<script runat="server">
String foo = "bar";
</script>
And this causes the page to explode. I have some experience with PHP, but am very new to .NET. Is there a way to define a variable in a .ascx file in this way? Maybe I have not imported all the correct libraries at the top of the page?
first off I can't post the code, so I will do my best to try to explain what I am trying to do. I have a repeater with three literals (a member ID, a name, a uservalue) and three hyperlinks. Each of the hyperlinks goes to a different page (obviously).What I am trying to do is when the user clicks on one of the hyperlinks, (doesn't matter which one because the three literals need to be put into session variables regardless) I want the session variables set to the literal values before calling the next page.How do I get the session variables set when the user clicks on one of the hyperlinks?
View 9 RepliesI'm building a site (it's amazing how much you can do and still not know what you're doing).I have my visitor login from a login.aspx page and, when authenticated are redirected to a Portal page. On that Portal page at pageload I set a Session variable "UserName" using the User.Identity.Name like this:
Protected Sub Page_Load(ByVal sender As Object, ByVal e As System.EventArgs) Handles Me.Load
If User.Identity.Name <> "" And User.Identity.IsAuthenticated = True Then
If Page.IsPostBack = False Then
Session("UserName") = User.Identity.Name
End If
[code]...
I'm having a hard time understanding why the following code doesn't work. I'm sure it's something remedial that I'm missing or not understanding. I currently have a page that asks for user input. If, based on the input and logged in user, I find data from this page already in the database, I need to update the existing records rather than creating new ones, so I set a class-level bool to true. The problem is, when MyNextButton is clicked, PreviouslySubmitted is still false. So, I'm not sure how to make the value of this variable persist.
public partial class MyForm : System.Web.UI.Page
{
private bool PreviouslySubmitted;
protected void Page_Load(object sender, EventArgs e)
{
MyButton.Click +=
(o, i) =>
{
q = from a in db.TableA
where (a.SomeField == SomeValue)
select a;
if(q.Any())
{
PreviouslySubmitted = true;
//populate the form's fields with values from database for user to revise
}
}
MyNextButton.Click +=
(o, i) =>
{
//the value of PreviouslySubmitted is false at this point,
//even if I made sure it was set to true the previous postback
if(PreviouslySubmitted)
{
//update database
}
else
{
//insert into database
}
}
I'm getting a very peculiar problem with my asp.net application, it took me an age to track down but I still don't know what is causing this behaviour.
If I set a session variable in the Application_PreRequestHandlerExecute event, then my external JavaScript files are ignored, and therfore causing a raft of errors. I have simplified the problem below.
E.g.
I have file called JScript.js containing the code:
function myAlert() {
alert("Hi World");
}
And in my Default.aspx file I reference the js with the code:
<script src="JScript.js" type="text/javascript"></script>
And in the body onload event I call the myAlert() function:
<body onload="myAlert()">
And finally in the Global.asax file:
Private Sub Application_PreRequestHandlerExecute(ByVal sender As Object, ByVal e As EventArgs)
HttpContext.Current.Session("myVar") = "MyValue"
End Sub
If you run the Default.aspx file you will see the js function isnt called, however, if you comment out the line of code Global.asax then the external js is called and the function executed when the page loads.
I'm constructing a LinkButton from my codebehind, and I need to assign the onclick to a method, and pass a parameter with it too. I have this so far:
LinkButton lnkdel = new LinkButton();
lnkdel.Text = "Delete";
protected void delline(string id)
I am using ASP.NET MVC 3 and the YUI library.I created my own helper method to redirect to an edit view by passing in the item's ID from the Model as such:
window.location = '@Url.RouteUrl(Url.NewsEdit(@Model.NewsId))';
Now I am busy populating my YUI data table and would like to call my helper method like above, not sure if it is possible because I get the item's ID by JavaScript like:
var formatActionLinks = function (oCell, oRecord, oColumn, oData) {
var newsId = oRecord.getData('NewsId');
oCell.innerHTML = '<a href="/News/Edit/' + newsId + '">Edit</a>';
};
How can I call a .net method in inline code using a javascript variable?My code looks like this:
for ( var i = 0; i < numberIterations; i++ )
{
var result = <%# GetFilterTagURL( myArray[i].Value, false) %>;
//do stuff with result
}
This block is inside a javascript block; the GetFilterTagURL method is a a .net method and I want to pass the variable myArray[i].Value as the first parameter.
UPDATE:I guess that, as you say, I'll have to create a web service to achieve what I want.
I have figured out a method for displaying a modal popup using the ACT ModalPopupExtender from the server side.This is really important because there is a fair amount of server side initialization that I require prior to showing the dialog.
Basically, I assign a dummybutton as the TargetControlID. Then I define a link button such that when clicked it fires an OnClick event. The handler then does whatever initialization is necessary and uses the show() method of the ModalPopupExtender. This is not rocket science. However, what appears to be rocket science is getting a control within the MPE to get the cursor focus. The problem as I see it is that because I am manually showing the dialog, the JS add_shown function never fires. Of course the add_shown function is attached through JS by using the behavior ID of the MPE. It appears to be the standard way to set focus within a MPE dialog. It appears to only work if the targetcontrolid is a real button that shows the MPE dialog when clicked.
Is it possible to set the focus within a MPE dialog when you are programatically showing the dialog and not attaching a real button press event to the MPE Target Control ID? Obviously the Page.SetFocus or Control.Focus() do not work either before or after the modal dialog is shown:
protected void SignIn_Click(object sender, EventArgs e)
{
Session["InTimeOut"] = true;
Session["logintries"] = 0;
SI_user_login_id.Focus(); /// ---> This does not set the focus either before or after the show method
this.ModalSignOn.Show();
}
I am storing the returned sql resultant rows in a session variable ... so that I need not to query again and again
Session["ds"] = datasetname;
Everything is fine but when I am doing export to excel ... where at last after the export is completed I am calling the method in try/catch
try {
Response.End()
}
catch {}
But due to this, my session variable (ds) is getting expired and when I am using it next there is no rows and hence my page displays no data.
I tried going through internet and found that this is a bug it seems as identified by Microsoft and they have provided a hotfix for this but in Windows Vista .... I am running on XP.
[URL]
Is there any other workaround to this problem?
The drop down list is used to determine what search criteria will be used to find an invoice. I tried to set the Select method in the switch statement. I don't understand how to set the Select Method and the select parameters programmatically though . I tried a few different ways but can't make the compiler happy. My ODS is in scope in the code behind. I'm not able to access it's properties though. The BAL resides in a separate project that is a ClassLibrary. I also have a using statement for the ClassLibrary project in the code behind.
give me an example of how to do this?
Mark up:
[Code]....
[Code]....
[Code]....
[Code]....
<div class="sp1" style="background-image:url(<%#GetImage()%>);" runat="server"> </div>
Tested my method by assigning the String(containing my image's path) returned by it to a label..its getting the path alright..then why wont it display when I run the code?when I viewed the page's source..this is what I see..
<div class="sp1" style="background-image:url(<%#GetImage()%>);"> </div>
I got a variable of type System.Drawing.Image and need to convert it to a variable of type byte so I can store the image in the database. Can someone show me how to do that in VB.NET code.
View 2 RepliesNested GridView Control returns "Object variable or With block variable not set" when outer GridView returns rows.
The Nested GridView Control works as long as the outer GridView returns rows, the following code works: [Code]....
Object variable or With block variable not set.
Description: An unhandled exception occurred during the execution of the current web request. Please review the stack trace for more information about the error and where it originated in the code.
Exception Details: System.NullReferenceException: Object variable or With block variable not set.
Source Error:
Line 118: If e.Row.RowType = DataControlRowType.DataRow Then
Line 119: Dim myStatus_ID As SqlDataSource = CType(e.Row.FindControl("sqlDeviceStatusAssign"), SqlDataSource)
Line 120: If Not e.Row.DataItem("Status_ID") Is Nothing Then
Line 121: myStatus_ID.SelectParameters(0).DefaultValue = e.Row.DataItem("Status_ID")
Line 122: End If
I have tried checking for IsDbNull and checking to see if a label exists in a given row. This code *If Not e.Row.DataItem("Status_ID") Is Nothing Then* appears to do nothing.Same with the following:
*Dim localLblItemReference As Label = CType(e.Row.FindControl("lblItemReference"), Label)
*If Not localLblItemReference Is Nothing Then
******************************************************************************************
To further clarify my question above, I am looking for a method to detect e.Row.DataItem("Status_ID") is nothing/null due to the outer GridView returning 0 results in a query.I have a (Outer) GridView Control with another GridView Control inside of a template field with it's associated SqlDataSource control.
In the "Protected Sub GridViewReport_RowCreated", I provide the Select Parameter for the associated SqlDataSource with the DataItem row value.When the (Outer) GridView Control does not return any rows, the "e.Row.DataItem("Status_ID")" throws a:
Exception Details: System.NullReferenceException: Object variable or With block variable not set.
I am using three listviews on a page ... the first is always populated ... the other two are sometimes populated I want to total amounts and counts from all three ... so I set up steps in the DataBound events works great when all three listviews are populated the error "Object Variable or With block variable not set." occurs when LV2 or LV3 is not populated I've tried testing DataItem ... Is Nothing but get the failure on the If test instead
View 3 RepliesI have develop a web application. I have put my web application in my server and user can access from any location.
My server regional and setting is English (US). Now my problem is
1) When user access to my system and his pc setting is English (UK), it will prompt and error
and after i debug i suspect it is because of Datetime conflict (dd/MM/yyyy and MM/dd/yyyy)
2) I cannot fix or limit my user to setting his/her pc regional setting to UK
So what can i do in my web application solve this issue?
(Can i write any code in my client side (.aspx) to convert or do standardization to US)
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].......