Web Forms :: Get Values From Helper Classes?
Jun 1, 2010
I am learning how to work with BLL and DAL
I have 2 class files in BLL and using DAL i am connecting to the sql database
in BLL i have a class called productsHelper.cs and using GetProducts() method used to fetch records from database
products.cs - have all insert,edit,delete methods
I want to bind all products to gridview
But I couldnt find how to do that.how to get those methods to my aspx.cs page from class files.and write code in there.
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Similar Messages:
Feb 21, 2010
I just want to know if anyone stores their helper classes or methods in a separate assembly and why...just for clean management of them? I've seen so many posts about using a helper folder inside your MVC project and that brings me back to the messy old days in ASP.NET where people were using an App_code folder instead of cleanly separating things out physically like this into its own project. And likewise nobody doing real architecture is going to put models in some folder in your MVC web assembly. They would go in MyApp.DataLayer assembly or MyApp.Models or something like this.
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Feb 23, 2010
im reading checkbox value which is checked on my gridview but as per my code is missing the 1st one which on top but i select from the middle then it is working fine here is link for gridviewhelper classes [URL] and im calling this code from gridviewhelper classes on page load event
Dim helper As New GridViewHelper(Me.GridView2)
helper.RegisterGroup("heading", True, True)
AddHandler helper.GroupHeader, AddressOf helper_GroupHeader
and here is my code
Dim sc As New StringCollection()
Dim id As String = String.Empty
For i As Integer = 0 To GridView2.Rows.Count - 1
'loop the GridView Rows
Dim cb As CheckBox = DirectCast(GridView2.Rows(i).Cells(2).FindControl("CheckBox2"), CheckBox)
'find the CheckBox
If cb IsNot Nothing Then
If cb.Checked Then
id = GridView2.Rows(i).Cells(1).Text
sc.Add(id)
MsgBox(id)
End If
End If
Next
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Oct 17, 2010
I have two different classes, and would like to (for example) alter the text of a label control contained in one class using the other. At present I experience the following error (e.g.):
"ProjectName.PageName.Protected WithEvents ControlName As System.Web.UI.HtmlControls.HtmlGenericControl' is not accessible in this context because it is 'Protected'."
All the subroutines in my PageName class begin "Protected Sub...", however even if I change these to "Public Sub..." this does not fix the problem. How do I achieve this? Also, are there security implications to not protecting subroutines?
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Sep 6, 2010
I usually use STATIC implementation when developing Desktop Application and I just got my head bumped on the wall when I use STATIC in ASP.NET (not a good idea)I think I saw some feedback here before that you can use INTERFACE for passing values between Classes and Pages without using Session.here's my sample code
public interface ISessionManager
{
SessionStates sesState { get; set; }[code]....
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Mar 24, 2010
Can I use VB and C# classes together in the same asp.net 3.5 project?
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Jul 20, 2010
I think I need to drop in some escape characters, but I'm not quite sure where. Here is the javascript function I'm attempting to call:
function setData(associateValue, reviewDateValue) {
var associate = document.getElementById("Associate");
var reviewDate = document.getElementById("ReviewDate");
associate.value = associateValue;
reviewDate.value = reviewDateValue;
}
Here is the asp .net mvc line where I'm attempting to create a Radio button with a click event that calls the above function and passes data from the model as javascript parameter values.
<%= Html.RadioButton("Selected", item.Selected, new { onClick="setData('<%=item.Associate%>','<%=item.ReviewDate%>' )" } )%>
The above throws a bunch of compile issues and doesn't work. A call such as the following does call the javascript, but doesn't get the data from the model.
<%= Html.RadioButton("Selected", item.Selected, new { onClick="setData('item.Associate','item.ReviewDate' )" } )%>
<%= Html.RadioButton("Selected", item.Selected, new { onClick="setData('item.Associate','item.ReviewDate' )" } )%>
<% String functionCall = String.Format("setData('{0}','{1}')", Html.Encode(item.Associate), Html.Encode(item.ReviewDate )) ; %>
<%= Html.RadioButton("Selected", item.Selected, new { onClick=functionCall } )%>
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Jan 11, 2010
I am new to LINQ. when we drag tables we get a dbml file and designer file.
For example DataClasses1.dbml and DataClasses1.designer.cs.
Once we have them then we can start using our LINQ Queries.
In my company project I do not see this designer files and instead there are .tt files which were used as templates to greate ABC.generated.cs files. Is this same as designer class?
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May 17, 2010
I am following the Nerd Dinner tutorial as I'm learning ASP.NET MVC, and I am currently on Step 3: Building the Model. One part of this section discusses how to integrate validation and business rule logic with the model classes. All this makes perfect sense. However, in the case of this source code, the author only validates one class: Dinner.
What I am wondering is, say I have multiple classes that need validation (Dinner, Guest, etc). It doesn't seem smart to me to repeatedly write these two methods in the partial class:
[code]....
This doesn't "feel" right, but I wanted to check with SO to get opinions of individuals smarter than me on this. I also tested it out, and it seems that the partial keyword on the OnValidate method is causing problems (understandably so). This doesn't seem possible to fix (but I could very well be wrong).
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Aug 11, 2010
I don't know if this has to do with how FindControl works or how scope works. But my base class is having a hard time seeing the fields of child classes. Currently I'm planning have the derived class set a property in the base class, but there are a lot of derived classes, so that isn't a very attractive solution.
[code]....
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Dec 15, 2010
I'm curious as to what people consider better practice, between duplicating model structure in the view model and using a mapping tool to move data between the two, or aggregate the model inside the view model, i.e. have a property on the view model class that is a reference to the actual model. Which is considered a better approach in general?
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Sep 18, 2010
I have a static class (an helper class) which has the responsability to create control and add them to a panel passed by parameter, this method is used by a lot of
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Dec 17, 2010
Is there a way to pass a reference of a page to a helper class? Scenario: [ASP.NET 2.0 Web Application] The page is a content page which has a MasterPage. The page calls a method in the helper class and passes the page byRef as an argument. The method in the helper class tries to find a control on the passed in page and set values. Problem: Only the MasterPage is being exposed and not the page I am trying to pass. Any recommendations on passing the page so that I can set the values of the controls within it?
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Jan 25, 2010
I have problem with gridview sorting. I am using online example to sort a grid view. see the link [URL] but I always got an error "The gridview fired sorting event without handle" on this statement "helper.ApplyGroupSort();"
<table width="100%">
<tr>
<td colspan=3><asp:Label id="category_name" Runat="server"
ForeColor="#ff0000" Font-Bold=true /></td>
</tr>
<tr>
<td colspan="3" align="center" width="100%">
<asp:GridView ID="dg_drawings"
runat="server" AutoGenerateColumns="False" EnableViewState="False" CellPadding="5" CellSpacing="0" Width="90%"
>
<Columns>
<asp:BoundField DataField="Description"
SortExpression="Description" />
<asp:BoundField DataField="sub_description"
SortExpression="sub_description" />
<asp:BoundField DataField="drawing_id" InsertVisible="False"
ReadOnly="True"
SortExpression="drawing_id" />
<asp:BoundField DataField="DRAWING_DESCRIPTION"
SortExpression="DRAWING_DESCRIPTION" />
<asp:BoundField DataField="DWG_URL" SortExpression="DWG_URL" />
</Columns>
</asp:GridView>
</td>
</tr>
</table>
Here is my C# code
public partial class listDrawings : System.Web.UI.Page
{
admin _admin = new admin();
private GridViewHelper helper;
int categoryid = 0;
protected void Page_Load(object sender, EventArgs e)
{
if (Convert.ToString(Session["logged_in"]) == "1")
{
ph_header.Controls.Add(LoadControl("../controls/builder_header.ascx"));
}
else
{
ph_header.Controls.Add(LoadControl("../controls/header.ascx"));
}
/*if (Convert.ToString(Session["details_hit"]) != "1")
{
_admin.add_page_hit("Standard Details");
Session.Add("details_hit", "1");
}
*/
string categoryidStr = Request.QueryString["categoryid"];
string category = Request.QueryString["category"];
//int categoryid = 0;
if (categoryidStr != null)
{
categoryid = Convert.ToInt32(categoryidStr);
}
category_name.Visible = true;
category_name.Text = category + " Drawing Details";
get_category_drawings(categoryid);
}
protected void get_category_drawings(int categoryid)
{
OracleConnection myConn;
OracleCommand myCmd;
if (categoryid == 3)
{
myConn = new OracleConnection(ConfigurationManager.AppSettings.Get("oracle"));
myCmd = new OracleCommand("DRAWINGS.GET_STAR_SUB_DRAWINGS");
myCmd.CommandType = CommandType.StoredProcedure;
myCmd.Connection = myConn;
myCmd.Parameters.Add(new OracleParameter("iCATEGORY", OracleDbType.Int32, ParameterDirection.Input)).Value = categoryid;
myCmd.Parameters.Add(new OracleParameter("iSUB_CATEGORY", OracleDbType.Int32, ParameterDirection.Input)).Value = 0;
myCmd.Parameters.Add(new OracleParameter("oDRAWINGS", OracleDbType.RefCursor, ParameterDirection.Output));
}
else
{
myConn = new OracleConnection(ConfigurationManager.AppSettings.Get("oracle"));
myCmd = new OracleCommand("DRAWINGS.GET_STAR_DRAWINGS");
myCmd.CommandType = CommandType.StoredProcedure;
myCmd.Connection = myConn;
myCmd.Parameters.Add(new OracleParameter("iCATEGORY", OracleDbType.Int32, ParameterDirection.Input)).Value = categoryid;
myCmd.Parameters.Add(new OracleParameter("oDRAWINGS", OracleDbType.RefCursor, ParameterDirection.Output));
}
try
{
myConn.Open();
this.dg_drawings.DataSource = myCmd.ExecuteReader();
dg_drawings.DataBind();
helper = new GridViewHelper(this.dg_drawings);
string[] cols = new string[2];
cols[0] = "Description";
cols[1] = "sub_description";
helper.RegisterGroup(cols, true, true);
helper.ApplyGroupSort();
}
catch (OracleException ex)
{
if (categoryid == 3)
{
_admin.send_email("resources/listDrawings.aspx", "DRAWINGS.GET_STAR_SUB_DRAWINGS", ex.Message);
}
else
_admin.send_email("resources/listDrawings.aspx", "DRAWINGS.GET_STAR_DRAWINGS", ex.Message);
Response.Redirect("~/error.aspx");
}
finally
{
myCmd.Dispose();
myConn.Close();
myConn.Dispose();
}
}
}
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Jul 21, 2010
i am wondering if i got a label that works out a price in default.aspx and then i want to show it on an invoice Invoice.aspx with Button.Attributes.add("onclick","popup(this)"); with java popup to show my invoice on button click how i am gonna get that label that works out the price to invoice.aspx?
here is my code sample,
[code]....
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Mar 13, 2010
I am going develop a web site which will be getting 10000s of user on a daily basic at the beginning and expected to grow very fast. so would like to know In order to communicate with database like fetching and inserting records should i use DataSet or create my own custom classes.
[URL]
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Jan 9, 2011
I followed MVC 2 source to create a CheckBoxList helper.
I was able to identify the problem I am having but not able to solve it.
On my view I have the following:
[Code]....
The problem is in the bold part ...
The newSelectList is equal to selectList but all items were deselected.
What am I missing?
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Jan 20, 2010
I was wondering if it's possible to render an Html Helper in a View inside a codeblock. So instead of:
[code]....
And have this render. Of course as it is, it wont render, so is there a way to programically decide if a textbox can be added without having to have a million delimiters in the page to accomplish this?
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Jul 1, 2010
I wanted to write a code for JQgrid in asp.net .I have tried the same in asp.net MVC,but i want it now in asp.net .n MVC we use Helper class,and return json data,so what to do in asp.net where helper class can not be used.Serialization can be done with data to get it in json.,but what about Htmlhelper.
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Nov 26, 2010
I'm trying to use the Video helper (Microsoft.Web.Helpers) but nothing happens to Flash or Silverlight.
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Feb 2, 2011
Can anyone help me with an alphabetical pager helper?
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Mar 15, 2010
I am trying to create 2 Html helpers but that use the String Type as in MVC 2.
1. Html.FileFor Would render something like: <input type="file"
2. Html.Buttom and Html.Submit that would render <input type="button" or <input type="submit" In this case I suppose it makes no sense to have the For.
I know how to do (2) unless there would be something more than rendering the help and defining the Html attributes. However (1) I don't know how to do it
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Feb 19, 2010
I would like to create a static helper method that I can call from a view.
Is it possible for a helper method to have access to the current ViewContext without needing to explicitly pass the ViewContext to the method as a parameter?
Something like HttpContext.Current except for ViewContext.
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Jan 13, 2011
If I included a page class into a namespace the Profile page property becomes undefined.Why and how to solve this problem.For example I want to include my pages classes into a namespace MyProject.UI.
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Aug 19, 2010
I have a BasePage class that all of my content pages inherit from. In my BasePage, I have many Import Statements. It seems as though they carry over into the derived class as one would expect. However, if you were to try and access code in the client aspx design page, as you would in the code-behind, you run into problems.
For instance, in my BasePage i have a Public Enum named ThemedSites. It's just an enumerator that lists the 5 different themes my site could be skinned as. I, at times, need to do different things in code, and in design, depending on what theme I'm currently in. I have a Public Property named CurrentSite (might have been more appropriate to say CurrentTheme, but that's besides the point). CurrentSite's return type is ThemedSites. So in code, one would say something like:
[Code]....
This works great in any page that inherits the BasePage class. This falters when that very same logic is used in the design page like:
[Code]....
Now, it works if you fully qualify both sides of the condition, but that's not my question. My question is: why isn't the Imported NameSpace in the BasePage recognized in the client-side server tag, as one would think it would be, according to how it IS recognized in the server-side code-behind?
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