GridView vs DataList vs Repeater vs Formview vs DetailsView - which one to choose

Re: GridView vs DataList vs Repeater vs Formview vs DetailsView - which one to choose

Feb 06, 2007 03:39 PM

Feature	Repeater	DataList	GridView
Table layout	No	No	Yes
Flow layout	Yes	Yes	No
Column layout	No	Yes	No
Style properties	No	Yes	Yes
Templates	Yes	Yes	Columns/optional
Select/ Edit/Delete	No	Yes	Yes
Sort	No	No	Yes
Paging	No	No	Yes

Validation functions in JavaScript for Date and Password

<script type="text/javascript" language="javascript">function ValidateDate(inval) {

//var re = /^\d{1,2}\/\d{1,2}\/\d{4}$/;//var re = /(?:0[1-9]|[12][0-9]|3[01])\/(?:0[1-9]|1[0-2])\/(?:19|20\d{2})/;
var message = "OK!";
var Day, Mn, Yr;
var re = /^(\d{1,2})[-.\/](\d{1,2})[-.\/](\d{4})$/;
if (!inval.match(re))
message = "Enter Date in Valid Format";

re.exec(inval);
Day = RegExp.$1;
Mn = RegExp.$2;
Yr = RegExp.$3;
var DateVal = Mn + "/" + Day + "/" + Yr;
var dt = new Date(DateVal);
if (dt.getDate() != Day) {
message = "Invalid Day!"}
else if (dt.getMonth() != Mn - 1) {
//this is for the purpose JavaScript starts the month from 0message = "Invalid Month!"}
else if (dt.getFullYear() != Yr) {
message = "Invalid Year!"}
alert(message);

}
function ValidatePassword(inval) {
var message = "";
//alert(inval);var re = /^(?=.*\d)(?=.*[a-z])(?=.*[A-Z])\w{6,}$/;
//alert(re.test(inval));re = /(?=.*\d)/;
message += (re.test(inval) == false) ? "Please enter at least one numeric\n" : "";
re = /(?=.*[a-z])/;
message += (re.test(inval) == false) ? "Please enter at least one small char\n" : "";
re = /(?=.*[A-Z])/;
message += (re.test(inval) == false) ? "Please enter at least one cap char\n" : "";
re = /\w{6,}/;
message += (re.test(inval) == false) ? "Length should be more than 6 chars\n" : "";
if (message != "")
alert(message);
}
</script>



===================================================

<script type="text/javascript" language="javascript">
        function ValidateDate(inval) {
       
            //var re = /^\d{1,2}\/\d{1,2}\/\d{4}$/;
            //var re = /(?:0[1-9]|[12][0-9]|3[01])\/(?:0[1-9]|1[0-2])\/(?:19|20\d{2})/;
       
            var message = "OK!";
            var Day, Mn, Yr;
            var re = /^(\d{1,2})[-.\/](\d{1,2})[-.\/](\d{4})$/;
            if (!inval.match(re))
                message = "Enter Date in Valid Format";
           
            re.exec(inval);
            Day = RegExp.$1;
            Mn = RegExp.$2;
            Yr = RegExp.$3;
            var DateVal = Mn + "/" + Day + "/" + Yr;
            var dt = new Date(DateVal);
            if (dt.getDate() != Day) {
                message = "Invalid Day!"
            }
            else if (dt.getMonth() != Mn - 1) {
                //this is for the purpose JavaScript starts the month from 0
            message = "Invalid Month!"
            }
            else if (dt.getFullYear() != Yr) {
            message = "Invalid Year!"
            }
            alert(message);
           
        }
        function ValidatePassword(inval) {
            var message = "";
            //alert(inval);
            var re = /^(?=.*\d)(?=.*[a-z])(?=.*[A-Z])\w{6,}$/;
            //alert(re.test(inval));
            re = /(?=.*\d)/;
            message += (re.test(inval) == false) ? "Please enter at least one numeric\n" : "";
            re = /(?=.*[a-z])/;
            message += (re.test(inval) == false) ? "Please enter at least one small char\n" : "";
            re = /(?=.*[A-Z])/;
            message += (re.test(inval) == false) ? "Please enter at least one cap char\n" : "";
            re = /\w{6,}/;
            message += (re.test(inval) == false) ? "Length should be more than 6 chars\n" : "";
            if (message != "")
                alert(message);
        }
    </script>

Javascript Date Validation function

<script language="javascript" >///^\d{5}$/.test('84601')



function IsValidDate(d) {var Day, Mn, Yr;var re = /^(\d{4})[-\/.](\d{1,2})[-\/.](\d{1,2})$/;
// var re = "^(19|20)\d\d[- /.](0[1-9]|1[012])[- /.](0[1-9]|[12][0-9]|3[01])$";
re.exec(d);
Yr = RegExp.$1;
Mn = RegExp.$2;
Day = RegExp.$3;




}

if (!d.match(re)) return false;var DateVal = Mn + "/" + Day + "/" + Yr;var dt = new Date(DateVal);if (dt.getDate() != Day) {return (false);else if (dt.getMonth() != Mn - 1) {//this is for the purpose JavaScript starts the month from 0
}


}

}
return (false);else if (dt.getFullYear() != Yr) {return (false);return (true);</script>




========================================
========================================


USAGE




<%@ Page Language="C#" AutoEventWireup="true" CodeFile="Default.aspx.cs" Inherits="_Default" %><!
<
<DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">html xmlns="http://www.w3.org/1999/xhtml">head runat="server"><title></title><script language="javascript" >///^\d{5}$/.test('84601')


function IsValidDate(d) {var Day, Mn, Yr;var re = /^(\d{4})[-\/.](\d{1,2})[-\/.](\d{1,2})$/;// var re = "^(19|20)\d\d[- /.](0[1-9]|1[012])[- /.](0[1-9]|[12][0-9]|3[01])$";
re.exec(d);
Yr = RegExp.$1;
Mn = RegExp.$2;
Day = RegExp.$3;




}
if (!d.match(re)) return false;var DateVal = Mn + "/" + Day + "/" + Yr;var dt = new Date(DateVal);if (dt.getDate() != Day) {return (false);else if (dt.getMonth() != Mn - 1) {//this is for the purpose JavaScript starts the month from 0
}


}

}

</
<return (false);else if (dt.getFullYear() != Yr) {return (false);return (true);</script>head>body><form id="form1" runat="server"><div><input value="1999-9-9" id="datavalue" onblur="alert( IsValidDate(document.getElementById('datavalue').value) );"/></div>
</
</</form>body>html>

How to open a pop up window in asp.net ?

A very good discussion at :

http://forums.asp.net/t/883647.aspx


Without Postback :
Button1.Attributes.Add("onclick", "window.open('www.microsoft.com'); return false;");

look at the following :

The onClick attribute is Javascript anyway, so it is wrong to also include the javascript: pseudo-protocol.

That is, the following is wrong:
    Button1.Attributes.Add("onclick", "javascript:window.open('www.microsoft.com'); return false;");

And the following is correct:
    Button1.Attributes.Add("onclick", "window.open('www.microsoft.com'); return false;");

We use the javascript: pseudo-protocol only when altering an href attribute, as by default that is an http:// protocol.

That is, the following is wrong:
    <a href="window.open('www.microsoft.com');">Visit Microsoft</a>

And the following is correct:
    <a href="javascript:window.open('www.microsoft.com');">Visit Microsoft</a>



However if you want deliberate postback , you can use something like :


<%@ Page Language="C#" %>
<%@ Import namespace="System.Text" %>
<script runat="server">
    void Button1_Click(object sender, EventArgs e)
    {
        // Do some other processing...
        StringBuilder sb = new StringBuilder();
        sb.Append("<script>");
        sb.Append("window.open('http://msdn.microsoft.com', '', '');");
        sb.Append("</scri");
        sb.Append("pt>");
        Page.RegisterStartupScript("test", sb.ToString());
    }
</script>
<html>
<head>
</head>
<body>
    <form runat="server">
        <asp:Button id="Button1" onclick="Button1_Click" runat="server" Text="Go!"></asp:Button>
    </form>
</body>
</html>

How to swap to values in a table ? e.g. 'M' with 'F'

/* APPROACH 1 */
update test set gender = (case when gender = 'M' then 'F' when gender = 'M' then 'F' end )/* APPROACH 2 */
declare @oldvalue varchar(10) = 'M'declare @newvalue varchar(10) = 'F'update test set gender = (case when gender = @oldvalue then @newvalue when gender = @newvalue then @oldvalue end )

Something important about structs

Structs cannot contain explicit parameterless constructors
Structs can be only public or internal.
Struct members can be public, private or internal.
Struct can nest a class.
If you create a parametersised constructor, you MUST initialise all members in it.

Difference Between Passing a Struct and Passing a Class Reference

http://msdn.microsoft.com/en-US/library/8b0bdca4(v=VS.80).aspx

 

How to: Know the Difference Between Passing a Struct and Passing a Class Reference to a Method (C# Programming Guide)