Forms Data Controls :: New Class Creation For Data From Gridview?
Aug 2, 2010
I think I've created and instantiated my first custom class. I'm pretty darn excited! Been reading up on it, I think I did it right but I'd like someone to double check. I'm trying to collect question ID's and associated answer values from a databound gridview and then insert them into the database.
I have two questions:
-Did I set up and instantiate the new class correctly? (also will need to access the class on other webpages)
-Am I ready for the next step of inserting into the Database with LINQ or is there something else I need to do?
[Code]....
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Aug 20, 2010
how can i add empty editable rows in gridview dyanamically in c sharp web application
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Oct 7, 2010
I have been tasked with producing a web application for a new client. What they're looking for requires a Gridview with slave Detailsview within an Update Panel.
I produced this, including the Gridview in markup, as follows:[Code]....
[Code]....
However, although it works, it's been requested that I move most of this to code behind (for easier maintenance), which is causing me a few headaches.
What is the correct option here, since I see many potential methods?
Should I create an instance of the Gridview and Update Panel in markup, then define all events and columns in code behind? Create a new Gridview entirely in code behind and place it within the Update Panel? Create both in code behind?
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Jan 11, 2010
I have created a gridview at runtime. its working fine when i load the grid first time. after when i am selecting next value from ddl to load grid according to that option(selecting from dropdown list and coresponding values showing in grid) showing error that "A field or property with the name 'datafield name' was not found on the selected data source."
might be i am getting this error becuze the privious value is not being cleared"
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May 10, 2010
I have a stored procedure (For Eg: sp_GetAvlData) that accepts a number of parameters, 3 of which are TimeFrom, TimeTo (as varchar) and TimeInterval (as int), formulates a Dynamic query and executes itself. So for instance, if I call the proc as follows:
[code]....
dtAvl is the datatable containing the results of my stored procedure.
The next step for me is to make each of the cells (except the cells in the first column) as a Hyperlink so that when clicked upon a cell, it populates 2 textboxes with the selected Timeslot and Name or ID (ID field is not displayed in Gridview). The textboxes are located on the same page but outside of the Gridview control.
The Challenge that I'm facing out here are:
1) As you can see, the field names being generated are not fixed and I have no control over them.
2) Because the field names are not fixed I'm not sure I can implement this using the Templatefields or BoundFields of Gridview.
Is there any way to achieve the Hyperlinking of these cells within the Gridview?
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Nov 27, 2013
In my gridview I have
EDIT RoleUID RoleID Role Desc ....etc columns
each table contains first "EDIT" and then UID column and ID column etc columns contains.
Now i added new row with the code which you posted. But once i click on "Add New" button then the new row added like
EDIT textbox textbox textbox etc
I need INSERT in place of EDIT
and i am displaying textboxes 0 positon of grid
for (int j = 2; j < cellCount; j++)
How to display "insert" and how to put lable with uid and id values which are autogenerated..
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Feb 10, 2011
I have a class with many properties - strings, booleans, etc. This class was created from Entity Framework.
Now I want to quickly create the controls for the properties. I dont care about linking the controls to an object - I can do this later. I just find it a pain to create 50+ controls on the webpage when the class could be used to create a 'template'.
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Jul 13, 2010
i have a list of contacts (generic list) and i bind a gridview to it, i get the list displayed on the griview that fine, now i'm trying to get a contact object when i click a button on the gridview (button is a template field) i want to get the object back from the generic list, not just an ID using data key names, even the index of it in the generic list will do.
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Mar 29, 2010
I have gridview control where i have added two templates one template is the dropdown box another one is the text box.
I have common controls (Edit,update,cancel)
In the form i have one button .
On click on the button one new row is created in the grid view
Now how do i fetch the data entered in the dropdown box and the textbox.
How to reload the updated data to the dropdownbox,textbox.
On edit(twice) click it is switching to Update and cancel mode
On Cancel(twice) click it is switching to Edit mode.
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Feb 9, 2011
Does anyone know if it is possible to create a gridview from a class on a seperate webpage?
So I have webpage 1, that calls Class 1, in Class one there will be a Select Query that will call some info from a database and then return it to a gridview. The gridview wont work obviously as it is in the class and not on webpage 1.
Is there anyway to reference the fact I would like the gridview created on webpage1?
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Apr 16, 2010
i try to increment value from class and display in a gridview as a number for the row.
<
asp:GridView
ID="GridView1"
runat="server">
[code]...
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Jun 22, 2010
how can I change a checkboxfield in my Gridview from another class/file, my griedview name is gvUserEntry.
So what all do I need to do if I want to access this from another function
This is my grid view code....
<asp:GridView ID="gvUserEntry" runat="server" AllowPaging="True" AllowSorting="True"
AutoGenerateColumns="False" BackColor="White" BorderColor="#999999" BorderStyle="Solid"
BorderWidth="1px" CellPadding="3" DataKeyNames="RowId" DataSourceID="SqlDataSource6"
EnableModelValidation="True" ForeColor="Black" GridLines="Vertical">
[Code]....
Nw i want to change the TempPwd checkboxfield from another aspx file namely NewUserLogin.aspx, So is it possible? The idea behind doing this is, as soon as the user enters a new password in the NewUserLogin.aspx page, the checkboxfield in the GridView of CustomerSetup.aspx file should be unset.
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Apr 9, 2010
I have what's bound to be a stupid question, so I'll apologize for what I think should be an obvious answer my brain just can't see. My problem is very simple. I have a Repeater control bound to a SqlDataSource. The ItemTemplate in this case is one complicated beast, and rendering can take a loong time if too many records are returned; so I need to maintain tight control over how many records are brought back from the data source.
Is there not some way of either stopping the creation of subsequent RepeaterItems once a certain count has been reached, or cancelling the bind if more than a certain number of records are returned? I know I can grab the record count from the AffectedRows property in the Selected event of the DataSource, but I've encountered a brain-lock on how to stop/inhibit the binding (or RepeaterItem creation beyond x records).
I'm happy with either aborting the binding altogether if the record count is too high (displaying no records), or simply stopping it after X records are returned; at this point, I'm not picky. Either way would work, and it seems I ought to be able to readily figure out either one, but my brain has simply gone into neutral.
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Sep 8, 2010
I'm trying to build a website for real estate listing. now the data would look like a datagrid. and while clicking on it, it should open under the clicked row the dynamic data related to the specific row. (like an AJAX accordion). this website for example ( ignore the language, couldnt find any better example [URL] Now, i've been told that this works by using "Dynamic Div Creation" which i have no idea how it should work this way. Is it possible to make it work by using an Accordion inside a datagrid? or what?
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Jan 21, 2010
I'm trying to change the CSS class of the row that is in edit mode. I've managed to get it working, but it only works for alternate rows. I'm totally stumped as to what could be causing it to behave like that. I've attached what I think is the relevant code below
[Code]....
protected void grdList_RowCreated(object sender, GridViewRowEventArgs e)
{
if (e.Row.RowType == DataControlRowType.DataRow)
{
e.Row.CssClass = "row";
}
if (e.Row.RowState == DataControlRowState.Edit)
{
e.Row.CssClass = "rowEdit";
}
}
.grdView tr.row:hover
{
background-color: #999999;
font-weight:bold;
}
.grdView tr.editRow
{
background-color: #999999;
font-weight:bold;
}
.rowEdit
{
background-color: #999999;
font-weight:bold;
}
.grdView .row .edit, .grdView .row .delete
{
display:none;
}
.grdView tr.row:hover td .edit, .grdView tr.row:hover td .delete
{
display:inline;
}
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Feb 2, 2010
as i have developed one class file which inherits from gridview and as there is only one option to get that custom control on to the design like
<%@ Register Assembly="CustomGridNm" Namespace="CustomgridNm" TagPrefix="c1" %>
and
<c1:CustomGrid ID="gridCustom" runat="server" AllowSorting="true"
AutoGenerateColumns="false" AllowPaging="true"
onsorting="gridCustom_Sorting" onpageindexchanged="gridCustom_PageIndexChanged"
[code]...
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Mar 31, 2011
Im writing a bit of code that will extract the contents of a gridview to excel. I have all the parts working except for one. In my page_load i fetch the data from the database and then have the user select some options which filters the data and then the gridview gets populated. The problem im having is that the Response call doesnt seem to get the data from the gridview if i enclose the database fetch command within if not page.ispostback in the page_load
I have some test pages where i just fetched the data from the database bound it in a gridview in the Page_load. then on a button click export the data in the gridview to excel. Works fine if i DONT enclose the fetch command within not page.ispostback but outputs an empty excel file if i do.
Now i have to use not page.ispostback in the actual webpages because the users have to make selections which will filter the original dataset. How do i get this to work?
The page is also implementing AJAX if that helps. Here's an example of what i have:
[Code]....
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Apr 25, 2010
I'm face of a little problem when using GridView, an EntityDatasource and entity custom properties using a partial class. I'll describe it and I hope that someone has already find the solution because I try to figured out since two days.
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Jun 10, 2010
In the example below I have set the control style to 'controlName' I want to use this class to define what my textbox looks like in edit mode. This works ok, so far so good. The Problem In a button event I add the class "validationError" to this textbox if the data is incorrect. When the grid gets rendered I expect to get 'controlName validationError as the class applied to the textbox. Unfortunately, it seems that the declarative statement overrides this and simply ends up as 'controlName' how I can intercept the application of the declarative class so that I get what I desire here?
<asp:BoundField
DataField="Name"
HeaderStyle-CssClass="headerName"
ItemStyle-
CssClass="itemName"
ControlStyle-CssClass="controlName"
HeaderText="Name"
>
</asp:BoundField>
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Dec 26, 2010
i want to create a dropdown control in which i want to bind data from my webservice, i know i have to create a custom server control with inherrit the System.Web.UI.WebControls.DropDownList in my class.
my problem is that i dont know how to bind data(say a datatable dt) from dt and further disable the datasource property and item.insert property so that no other data could be enter in this control.
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Dec 29, 2010
datalist not bind when i click asign classs button then enter some value and save.. datalist is bind when i click free class button then enter some value and save ... data list is not bind and show show that record...but it will save in database
why data list is not bind in free class button?
i bind through datalist.databind()
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Dec 29, 2010
I populate a DetailsView from an ObjectDataSource that is coded in a class - meaning that the ods Select, Update, Insert and Delete are class methods. The selected record is set to come from a GridView.SelectedValue.
My problem is that when the page loads the code crashes. I am pretty sure I know why: the DetailsView is pulling from a class object and instead of using the existing class object it instansiates a new one which is empty.
Here is the details view code:
[Code]....
Here is the odsDetailsView_1:
[Code]....
As you can see from the code the odsDetailsView gets it's information from a class object "Match". The detailsview is not controlled by any code behind.
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Feb 5, 2011
[Code]....
[Code]....
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Mar 29, 2010
My understanding of Factory Method Pattern is (Correct me if i am wrong) Factory Method Pattern "Factory Method allow the client to delegates the product creation (Instance Creation) to the subclass". There are two situation in which we can go for creating Factory Method pattern.
(i) When the client is restricted to the product (Instance) creation.
(ii) There are multiple products available.But a decision to be made which product instance need to be returned. If you want to create Abstract Method pattern
You need to have abstract product Concrete Product Factory Method to return the appropriate product.
public enum ORMChoice
{
L2SQL,
EFM,
LS,
Sonic
}
//Abstract Product
public interface IProduct
{
void ProductTaken();
}
//Concrete Product
public class LinqtoSql : IProduct
{
public void ProductTaken()
{
Console.WriteLine("OR Mapping Taken:LinqtoSql");
}
}
//concrete product
public class Subsonic : IProduct
{
public void ProductTaken()
{
Console.WriteLine("OR Mapping Taken:Subsonic");
}
}
//concrete product
public class EntityFramework : IProduct
{
public void ProductTaken()
{
Console.WriteLine("OR Mapping Taken:EntityFramework");
}
}
//concrete product
public class LightSpeed : IProduct
{
public void ProductTaken()
{
Console.WriteLine("OR Mapping Taken :LightSpeed");
}
}
public class Creator
{
//Factory Method
public IProduct ReturnORTool(ORMChoice choice)
{
switch (choice)
{
case ORMChoice.EFM:return new EntityFramework();
break;
case ORMChoice.L2SQL:return new LinqtoSql();
break;
case ORMChoice.LS:return new LightSpeed();
break;
case ORMChoice.Sonic:return new Subsonic();
break;
default: return null;
}
}
}
**Client**
Button_Click()
{
Creator c = new Creator();
IProduct p = c.ReturnORTool(ORMChoice.L2SQL);
p.ProductTaken();
}
Is my understanding of Factory Method is correct?
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Feb 10, 2011
what are the steps for a role based menu using sitemap and sql server database.
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