There it is written that controls should be added in Init event rather than Load event for the added controls to participate in the Postback data processing.But whose Init or Load event ? Page's Init or the containing container's Init event?
View 3 RepliesI need to generate a gridview with dynamic columns, on each cell I need a button that inserts-deletes a relationship in a database. The relationship is of course between what is represented by each column and row. I decided to use a gridview and create templatefields which I add programmatically to the table. I successfully got to that point but when i decided to raise a click event from the buttons or a rowcommand from the gridview I could not do it. I´m looking into doing this with button fields right now but I´m curious on how this can be accomplished?
Code:
[Code]....
I am using Javascript to create dynamic controls on the page I am not dealing with File Uploads, just creating custom field things.
I think I need to override SaveViewState and LoadViewState events to keep my controls in the ViewState.
Is it possible to access the html markup of programmatically created controls, and if so, how?
In c# you can write things like:
[code]...
I am creating a LinkButton programmatically and render its HTML output into a Literal control:
[Code]....
The LinkButton appears in the page output, but is not rendered clickable. In the output HTML, the result looks like:
[Code]....
I have a form that does a loop to create checkboxes. Here is the code in the loop:
LeftPosition+=120;
cbxDrives.Top = TopPosition;
cbxDrives.Left = LeftPosition;
cbxDrives.Text = d.Name;
CheckBox cbxDrives =
new
CheckBox();this.Controls.Add(cbxDrives);
This creates multiple check boxes on the form, and this works fine.
However, in the code behind for my button that the user clicks to execute the form, I cannot figure how how to read the values for the checkboxes. I've tried:
foreach (CheckBox cbxDrive
in cbxDrives)
{
}
but cbxDrives is not recognized.
I need to read through all of the checkboxes to see their values, so that the appropriate actions can be performed in the code behind.
I'm trying to manually create a button and add a Click event handler for it in code. However when the button is clicked the event handler doesn't seem to react on event (or event isn't called).
we tested the code in Visual Studio 2008 and everything worked just as it should. And I'm using Visual Web Developer 2005 XE. So I assume that I'm missing something to be done manually being in VWD 2005 XE, or the problem is in VWD 2005 XE it self.
here is what I'm doing:
[Code]....
I have an internal web search on my website. Previous, it has been used to search by our partnumber only. This was nice and easy
SELECT * FROM View_ProductRange WHERE PartNumber LIKE '%'+ @Search +'%'
I have now built an internal search.
[Code]....
However, I can't use paramaters because the paramaters appear to be 'applied' after the SQL statement has been built, so it would only add the final word the customer searched for due to the paramater taking the final variable at the end of the Foreach Loop. e.g.
[Code]....
Is there 1) a better way to search and 2) a safer option/method/approach.
FYI, at the moment I have
strSearch = strSearch.Replace("'", " ");
strSearch = strSearch.Replace("drop", " ");
strSearch = strSearch.Replace("table", " ");
strSearch = strSearch.Replace("Insert", " ");
strSearch = strSearch.Replace("amend", " ");
strSearch = strSearch.Replace("apend", " ");
strSearch = strSearch.Replace("delete", " ");
strSearch = strSearch.Replace(""", " ");
strSearch = strSearch.Replace("--", " ");
strSearch = strSearch.Replace(""", " ");
but I don't like that (there is a ToLower() method used)!
Say I am creating a Textbox in the codebehind of a page like this:
protected override void OnInit(EventArgs e)
{
base.OnInit(e);
TextBox test = new TextBox();
test.SkinkId = "MySkin";
placeHolder.Controls.Add(test);
}
and in my skin file I have this:
<asp:TextBox
runat="server"
SkinId = "MySkin"
Width="400"
/>
Why is the skin not beeing applied to the control. If i declare the control in my aspx page it works ok, but if I try to do it programatically it does not work...
I need to generate a button way after the page loads but I can't work out how to deal with the Event handler. If I do this when the page loads as shown bellow it works as intended but if I use the exact same method in a button it fails. (it creates the button but when I click the button it just disappears instead of showing a msgbox."I know I shouldn't use Msgbox in a web form but I only do it as a test then remove it"
Code:
Partial Class Default3
Inherits System.Web.UI.Page
Protected Sub Page_Load(ByVal sender As Object, ByVal e As System.EventArgs) Handles Me.Load
Dim mybutton As Button
mybutton = New Button
mybutton.Text = "Submit"
[code]...
Consider the following:The SomeEvent fires as expected when any of the dropdown's selection is changed. However if say DropdownList2 has a selection made then I make a selection with either DropDownList1 or DropdownList3, then SomeEvent fires again. What is causing this behavior and how do I get just a single raising of that event?I suspect that when the viewstate for the dynamcially created dropdownlists is restored and the selection restored, then the event is fired because technically the selected index did change when the control was recreated. The reason I suspect this is that the event fires the for each dropdownlist.
View 3 RepliesI'm creating a LoginView in a class file rather than at design time.
The equivalent LoginView created in a .aspx page and used the same way works fine, and User.Identity.IsAuthenticated is switching from false to true once I log in as a user so the problem must not be there.
But even once logged in, the programmatic version of this LoginView is not switching from the Anonymous template to the LoggedIn and the output is always "You are not logged in".
Anyone have ideas? thanks.
here is my code to create the loginview
private void BuildAddCommentView(HtmlTextWriter htmlTextWriter)
{
LoginView commentsLoginView = new LoginView();
commentsLoginView.AnonymousTemplate = new LoginViewTemplate("AnonymousTemplate");
commentsLoginView.LoggedInTemplate = new LoginViewTemplate("LoggedInTemplate");
commentsLoginView.DataBind();
commentsLoginView.RenderControl(htmlTextWriter);
}
here's the LoginViewTemplate class
class LoginViewTemplate:ITemplate
{
string _templateType;
public LoginViewTemplate(String templateType)
{
_templateType = templateType;
}
public void InstantiateIn(Control container)
{
Label label = new Label();
switch (_templateType)
{
case "AnonymousTemplate":
label.Text = "You are not logged in.";
container.Controls.Add(label);
break;
case "LoggedInTemplate":
label.Text = "YOU ARE LOGGED IN.";
container.Controls.Add(label);
break;
}
}
}
MyDataSource is a datasource stored in a session passed through a search page
protected void Page_Load(object sender, EventArgs e)
{
gridview1.DataSource = Session["MyDataSource"]; [code]....
dates appearing in this gridview display as M/d/yyyy + time for example 12/31/2010 00:00:00
My Question: i need a way to display date as d/M/yyyy with no time for example 31/12/2010 usually i do this by setting the gridview properties htmlencode=false and dateformatstring="{0:M-dd-yyyy}" but in this case the gridview dont show any field because it bind data only at run time
I have been using LINQ to SQL for quite a while (about two years). Every thing was fine until now. As usual, I created LINQ to SQL classes and built the project, then created an aspx page. However, I cannot see the DataClassesDataContext in the code behind file. It is not listed in the intellisense list.
View 5 RepliesFor some reason I have noticed that at run time when looking at my source of my ASP.NET page there are tags being created.
<input type="hidden" name="_VIEWSTATE" id="_viewstate" value="..lots of text.." />
and
<input type="hidden" name="_EVENTVALIDATION" id="_EVENTVALIDATION" value="..lots of text.." />
Why is this and what is it for?
How can I make sure that these are not created?
onething is not clear to me that in asp.net 1.1 there was asp.net project type but from 2.0 there is no asp.net project type option rather
there is option called website. in website type project no solution is created and no link is created with IIS.
why microsoft design in this way from 2.0. i think there must be soldin reason & advantage behind it.
I'm creating a static helper class for web services I'm writing. I'm tapping into the API of Telligent and therefore creating these Telligent "service" objects that allow me to do things with the platform. For example, I'm creating a MembershipSerice object in my helper class so I can do membership stuff with the same object. In my helper class I have a property with a getter that creates a new one of these objects:
private static MembershipService _MembershipService {
get return new MembershipService(path, usr, pwd);
[code]...
I am using asp.net/c# application. In my application, I have a gridview.<asp:GridView id ="gv_QuestionList" runat="server"> </asp:GridView>In Code Behind, I created dynamic textboxes and DropDownLists on RowDataBound.
[Code]....
I have a Save button out side the gridview which stores all the row values into database. when I click the "Save" button, I lost dyanamically ceated controls like textbox,dropdown and values (on postback).How can i get all the dynamically created controls and values after the post back?
i created a gridview with two columns and 8 rows dynamically. All the rows are empty and editable at runtime. I am giving column names for this grid from some other .aspx page by passing column names using querystring.Because i am using this grid for three different pairs of column names. i would like to know how to apply Required Field Validator, Regular Expression Validator and Range Validator on Gridview textboxes. So that by using those validators i want to validate user inputs. And i would also like to know how to add rows at runtime for this grid.
I am using ASP.net 2.0 and C#.net for this.(Visual Studio 2005)
The code i am using to create gridview is below.
[code]....
Having trouble with programmatically finding controls in DataList ItemTemplate
[Code]....
[Code]....
I m getting Problem in Tab Index Setting of Dynamic Created Controls. There are 6 Drop down dynamic created and also Two user controls which contains text boxes. There are also Static Controls on a Page. How i set tab index for all controls. I have try to give from code behind using TabIndex property But it's not working and Tab order get destory.
View 1 RepliesI have a need to create controls such as textbox, dropdown, etc in code (c#). The number and data for them is all contained in a database.
What is the best way for me to create and add these to the page (need to be underneath the next one as in a table layout) and then how do I refer back to these in code on postback?
so you have a dropdownlist. With names of your controls in it. You pick something in your dropdownlist for example Cats. Now I want my dropdownlist to do something with a checkboxlist named Cats.
View 12 RepliesI have a tree view with checkboxes for leaf nodes. If i click on checkboxes, I am creating some html controls dynamically. And in other static button click event I need to get an ID's of those dynamically created controls.
My Code is:
.aspx
<asp:Panel ID="pnlOuter" runat="server" Visible="false" Width="650px">
<table>
<tr>
<td>
<asp:Label ID="lblQtnrName" runat="server" Text="Questionaire Name"></asp:Label>
<asp:TextBox ID="txtQtnrName" runat="server"></asp:TextBox>...
I have a grid view in which for one column i need to add controls from code at runtime. It makes a checking wether the data is populated in a particular column in the grid, based on this we need to add either a link button or a label how can we do this ?
View 9 Replies