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I just noticed that the latest version of ASP.NET MVC has just been released. I have been developing in ASP.NET for over 6 years now, my question is why should i move to MVC, What are the advantages and how about the learning curve?
For those who are using it.. is it worth the investment in learning and using it?
What should i watch out for?
Can anyone help..
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You should really google for this question. You will find A LOT of pros/cons lists and comparisons.
I especially recommend the video-sessions from scott hanselman. E.g.:
http://www.hanselman.com/blog/CategoryView.aspx?category=Channel9
You learn a lot and the presentation style keeps you awake easily.
Often mentioned pros/cons:
Pros:
- Clear seperation of concerns / architecture
- Programming the web as it's ment to be (there's no view-state imitating a stateful environment)
- Programming the web is suddenly more fun - no weird event-handling / viewstate
- Easy understandable conventions - less configuration.
- Powerful architecture and tools to reuse components/views
- Better support of unit-testing
- Powerful Tools help you create CRUD-Szenarios with amazing speed
-...
Cons:
- New concepts to learn, some are difficult to get used to for traditional webform-developers
- Rich webform UI controls can ususally not be used in MVC - and therefor have to be replaced somehow
- ...
I would go the following way:
- Learn the basics, whether you're planning on using MVC or not. Then you have
a good start to decide if it will help you in the future (or not). This knowledge is definitely not wasted.
- Have a look at the nerddinner-application from hanselman
Hope this helps at least a bit
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Hi All,
when i am query from the data base i am getting Date in the following format
01-01-2010
but i want to display it in 01 - jan - 2010
how to this can any one help me.
Thanks and regards,
Amit Patel
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For asp.net use <datetime>.ToString() with the suitable formatter from here .
And for MS SQL use Convert() function like here.
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Hello,
when i change the quantity value and press update cart buttonn no chages happens and the cart quantities returns to 1 to all!!!
Here's th gridview
http://img15.imageshack.us/img15/2219/cartd.png
The Update Cart Event Handler and related methods
protected void UpdateCartButton_Click(object sender, EventArgs e)
{
System.Data.DataTable objDT = new System.Data.DataTable();
objDT = ((System.Data.DataTable)Session["Cart"]).Clone();
for (int i = 0; i <= ShoppingCartGridView.Rows.Count - 1; i++)
{
System.Data.DataRow drow = objDT.NewRow();
GridViewRow grow = ShoppingCartGridView.Rows[i];
string TempQ = ((TextBox)grow.FindControl("txtQuantity")).Text;
UpdateCartQuantities(i,TempQ);
BindTheGrid(ShoppingCartGridView);
}
}
public void UpdateCartQuantities(int rowIndex, string TempQ)
{
System.Data.DataTable CartTableForView =
(System.Data.DataTable)Session["cart"];
CartTableForView.Rows[rowIndex]["Quantity"] = TempQ;
Session["Cart"] = CartTableForView;
}
public void BindTheGrid(GridView TempGrid)
{
System.Data.DataTable CartTableForView = (System.Data.DataTable)Session["cart"];
TempGrid.DataSource = CartTableForView;
TempGrid.DataBind();
}
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I am following http://msdn.microsoft.com/en-us/library/ms998360.aspx link to authenticate users against "actives directories" and i could successfully login using this method.
Can anyone help me out how exactly can i get details of all the users displayed in my web site application when i am logged in as Administrator.
I want to display user details when the user i.e.,Administrator clicks on link say "User Details"
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Hi Guys,
I have a check box in my datagrid named chkSelection, also I have a bound column named phone_num
in the same datagrid. The issue is, I would like to get all the phone numbers
where a checkbox is checked...I have tried lots but can't get it right...
Anyone who knows such stuff? please help 
Here is what I have tried but it won't work..
CheckBox chkSelection;
foreach (DataGridItem item in contacts.Items)
{
chkSelection = (CheckBox)item.FindControl("chkSelection");
if (chkSelection.Checked == true)
{
}
}
Thanks,
Mo
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Are you able to find your checkbox using FindControl?
Try to quickwatch for DataGridItem to see is there checkbox available or not.
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Thanks man, I tried to work through you article but
they are working on a gridview and it's not quiet the
same with a datagrid, for instance this line:
chkBoxIndex = (string)grdView.DataKeys[row.RowIndex].Value.ToString();
in a datagrid there is no [row.RowIndex]
and this is what is used to add all the row indexs to the arraylist.
do know anything relating to a datagrid in particular?
I appreciate your help man
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The code seems ok to me, what problem are you facing?
Are you getting any error?
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Hi friend,
No the code does not give any trouble, just now I tried this:
foreach (DataGridItem item in contacts.Items)
{
chkSelection = (CheckBox)item.FindControl("chkSelection");
if (chkSelection.Checked)
{
string contact = contacts.Items[0].Cells[4].Text;
errors.Text = contact.ToString();
errors.Visible = true;
}
}
But I want to get all phone numbers if checked, so i tried to replace:
Items[0].Cells[4] with
Items[item].Cells[4] and
it gives an error it can't convert
Items[item] to Items[int]
do you know I can manager to get all the phone numbers...
please help if you can
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Hey u can again use the Findcontrol method in order to retrieve contact no
foreach (DataGridItem item in contacts.Items)
{
int i=0;
chkSelection = (CheckBox)item.FindControl("chkSelection");
if (chkSelection.Checked)
{
string contact = Convert.ChangeType((Label)item.FindControl("lblContactNo"),Label).text;
string[] arr=new string[20];
arr[i]= contact;
i++;
}
}
I hope this will help u....
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This will work, but you have to add a label control for your Contact No column.
I think there should be something like (item.Index) which you can use as items[item.Index].
I am not sure but there has to be something which'll give you the rowindex.
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<blockquote class="FQ"><div class="FQA">MorgSim wrote:</div>foreach (DataGridItem item in contacts.Items){ chkSelection = (CheckBox)item.FindControl("chkSelection"); if (chkSelection.Checked) { string contact = contacts.Items[0].Cells[4].Text;//this retrieves the phone_num at Items[0].Cells[4] errors.Text = contact.ToString();//whether checked or not, not what iam expecting really. errors.Visible = true; }}</blockquote>
Here you are not using "item" anywhere.
So, better option would be to use for loop instead of foreach.
<pre>
for(int i=0;i<contacts.Items.Count;i++)
{
string contacts = contacts.Items[i].Cells[4].Text;
}
</pre>
I think this should work. 
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Hey thanks for your help...
when I do exactly like you code it works ok as it will get all the phone numbers.
But remember i only want those phone numbers where checked is true..
So i modified the code like this:
for (int i = 0; i < contacts.Items.Count; i++)
{
foreach (DataGridItem item in contacts.Items)
{
chkSelection = (CheckBox)item.FindControl("chkSelection");
if (chkSelection.Checked)
{
string cont = contacts.Items[i].Cells[4].Text;
errors.Text += cont;
errors.Visible = true;
}
else
{
errors.Text = "";
errors.Visible = true;
}
}
}
here only the last row results to true when checked
I don't know why other rows are skipped even when checked.
Can you spot anything here?
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Good, atleast you got a headstart.
Now, i want to know, what is this errors.Text ?
and why you are doing error.Text="" ?
I think because of this it is giving problem, try removing error.Text="".
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nagendrathecoder wrote: Now, i want to know, what is this errors.Text ?
This will just show me the numbers that have been selected, its a label..
nagendrathecoder wrote: and why you are doing error.Text="" ?
I have disabled this and,
When I check any row, all the phone numbers are retrieved instead of just one that is checked
I don't know why this is behaving this way..
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IMO, you don't need that foreach loop.
Remove that loop, cast checkbox like this:
CheckBox chk = (CheckBox)contacts.Items[i].Cells[4].Text;
Now, see whether it is checked or not and then append it to errors.Text.
Don't include errors.Text="".
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nagendrathecoder wrote: CheckBox chk = (CheckBox)contacts.Items[i].Cells[4].Text;
Thanks man, well
When I do that I get an error:
Cannot convert type 'string' to 'System.Web.UI.WebControls.CheckBox'
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Yes.
You have to do :
CheckBox chk = (CheckBox)contacts.Items[i].Cells[4].FindControl("chkBox");
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hey hey hey brother!
man you are such a star*****
Finally all is working like expected...thanks alot
for being so helpful man
wish I could send you this ![Rose | [Rose]](https://codeproject.global.ssl.fastly.net/script/Forums/Images/rose.gif)
thanks again...cheers 
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Glad to know that its working. Always welcome.
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Dear All,
I have following code in PageLoad Event
protected void Page_Load(object sender, EventArgs e)
{
if (!Page.IsPostBack)
Session["FilteredTable"] = string.Empty;
if (Page.IsPostBack)
{
try
{
bindSelectedFields();
bindReport();
}
catch (Exception ex)
{
Response.Write(ex.Message + "<br>"+ ex.StackTrace);
}
}
}
and the same I have Code in design time
<table id="tFilterButton" ><%Response.Write(hidRmvFilter.Value);%></table>
which hidRmvFilter is hidden field.
the thing is I want to empty session variable at first visit of page. but in above code I dont know what is wrong which the session gets empty at any postback. I debugged the code and checked that when it reaches
<table id="tFilterButton" ><%Response.Write(hidRmvFilter.Value);%></table>
it again goes to the first IF block (I).
any ideas why the session gets empty at each postback or I am looking to an alternative to store session variable at any postback which it should get empty only in first page visit?
Abdul Rahaman Hamidy
Database Developer
Kabul, Afghanistan
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I think the problem is in your functions
Abdul Rahman Hamidy wrote: bindSelectedFields();
bindReport();
May be the functions causing postback again.
Try to check it again.
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