Hi
In interview and in our daily work, so many time we will require the basic, like how to reverse the string in asp.net. we can do in a simple manner like this
using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;public partial class Program_Revserse_String : System.Web.UI.Page
{
protected void Page_Load(object sender, EventArgs e)
{}
protected void Button1_Click(object sender, EventArgs e)
{
string a = TextBox1.Text;
TextBox2.Text = reverse(a);}
public string reverse(string s)
{
//take one new string
string str = string.Empty;
for (int j = s.Length – 1; j >= 0; j–)
{
//store the reverse character in seperate string
str = str + s[j];
}
return str;}
}
Chandradev's Blog 
protected void Page_Load(object sender, EventArgs e)
{
string s = “Token A ^&*$@% Token B ^&*$@% Token C ^&*$@% Token D”;
char[] a = s.ToCharArray();
string s1 = string.Empty;
for (int i = a.Length – 1; i >=0; i–)
{
s1 = s1 + a[i];
lblmeg.Text = s1;
}
string[] b = s1.ToString().Split(‘ ‘);
string s3 = string.Empty;
string s4 = string.Empty;
string s2 = string.Empty;
for (int j = 0; j = 0; k–)
{
s3 = s3 + c[k];
}
TextBox1.Text = TextBox1.Text + s3;
s2 = “”;
}
}
}
}
Hi
why did you send this code ?
for loop will not work
using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.IO;
public partial class _Default : System.Web.UI.Page
{
protected void Page_Load(object sender, EventArgs e)
{
if (!Page.IsPostBack)
{
foreach (System.IO.DriveInfo drive in
System.IO.DriveInfo.GetDrives())
{
TreeNode node = new TreeNode();
node.SelectAction = TreeNodeSelectAction.SelectExpand;
node.PopulateOnDemand = true;
node.Expanded = false;
node.Value = drive.Name;
if (drive.IsReady)
node.Text =
String.Format(“{0} – (free space: {1})”,
drive.Name, drive.AvailableFreeSpace);
else
node.Text =
String.Format(“{0} – (not ready)”, drive.Name);
this.TreeView1.Nodes.Add(node);
}
}
}
private void LoadDirectories(TreeNode parent, string path)
{
System.IO.DirectoryInfo directory =
new System.IO.DirectoryInfo(path);
try
{
foreach (System.IO.DirectoryInfo d in
directory.GetDirectories())
{
TreeNode node = new TreeNode(d.Name, d.FullName);
node.SelectAction = TreeNodeSelectAction.SelectExpand;
node.Expanded = false;
node.PopulateOnDemand = true;
parent.ChildNodes.Add(node);
}
}
catch (System.UnauthorizedAccessException ex)
{
parent.Text += ” (Access Denied)”;
}
catch (System.IO.IOException ex)
{
parent.Text +=
string.Format(” (Unknown Error: {0})”, ex.Message);
}
}
protected void TreeView1_TreeNodePopulate(object sender,
TreeNodeEventArgs e)
{
LoadDirectories(e.Node, e.Node.Value);
}
protected void TreeView1_SelectedNodeChanged(object sender,
EventArgs e)
{
try
{
System.IO.DirectoryInfo directory =
new System.IO.DirectoryInfo(
this.TreeView1.SelectedNode.Value);
this.GridView1.DataSource = directory.GetFiles();
this.GridView1.DataBind();
}
catch (System.UnauthorizedAccessException ex)
{
TreeView1.SelectedNode.Text += ” (Access Denied)”;
}
catch (System.IO.IOException ex)
{
TreeView1.SelectedNode.Text +=
string.Format(” (Unknown Error: {0})”, ex.Message);
}
}
}
–%>
using System.Web.UI.HtmlControls;
using System.Data.SqlClient;
using System.Windows.Forms;
public partial class Registration : System.Web.UI.Page
{
SqlConnection con = new SqlConnection(“Data Source=KARTHIK-3CABF53;Initial Catalog=neathra;Integrated Security=True”);
SqlCommand cmd = new SqlCommand();
protected void Page_Load(object sender, EventArgs e)
{
con.Open();
}
protected void btnsubmit_Click(object sender, EventArgs e)
{
cmd = new SqlCommand(“sp_register”, con);
cmd.CommandType = CommandType.StoredProcedure;
cmd.Parameters.AddWithValue(“@cname”, txtuname.Text);
cmd.Parameters.AddWithValue(“@caddress”, txtaddress.Text);
cmd.Parameters.AddWithValue(“@cemail”, txtemail.Text);
cmd.Parameters.AddWithValue(“@cmobile”, txtmobile.Text);
cmd.Parameters.AddWithValue(“@date”, DateTime.Now.ToShortDateString());
cmd.Parameters.Add(“@value”, SqlDbType.VarChar, 50);
cmd.Parameters[“@value”].Direction = ParameterDirection.Output;
cmd.ExecuteNonQuery();
string output = Convert.ToString(cmd.Parameters[“@value”].Value);
MessageBox.Show(output);
Response.Redirect(“Registration.aspx”);
}
}
create table register(cid int identity(100,1),cname nvarchar(30),caddress nvarchar(30),cemail nvarchar(30),cmobile nvarchar(15),date nvarchar(20))
create proc sp_register
(
@cname nvarchar(30),
@caddress nvarchar(30),
@cemail nvarchar(30),
@cmobile nvarchar(15),
@date nvarchar(20),
@value nvarchar (50) output
)
as
if exists (select * from register where cname=@cname)
begin
set @value = ‘Already Existed’
end
else
begin
insert into register values(@cname,@caddress,@cemail,@cmobile,@date)
set @value = ‘Inserted Successfully’
end
public void(int a,int b)
{
}
Hi
what do you want to ask with me?
Registration & Add New Item:
IService:
[ServiceContract]
public interface IService
{
[OperationContract]
void insert(customerdetails cd);
[OperationContract]
void additem(additemvariable aiv);
}
[DataContract]
public class customerdetails
{
[DataMember]
public string _cname,_caddress,_ccity,_cpincode,_cemail,_cphone,_cmobile;
public string name
{
get
{
return _cname;
}
set
{
_cname=value;
}
}
public string address
{
get
{
return _caddress;
}
set
{
_caddress=value;
}
}
public string city
{
get
{
return _ccity;
}
set
{
_ccity=value;
}
}
public string pincode
{
get
{
return _cpincode;
}
set
{
_cpincode=value;
}
}
public string email
{
get
{
return _cemail;
}
set
{
_cemail=value;
}
}
public string phone
{
get
{
return _cphone;
}
set
{
_cphone=value;
}
}
public string mobile
{
get
{
return _cmobile;
}
set
{
_cmobile=value;
}
}
}
[DataContract]
public class additemvariable
{
[DataMember]
public string _itemname, _itemprice;
public string itemname
{
get
{
return _itemname;
}
set
{
_itemname = value;
}
}
public string itemprice
{
get
{
return _itemprice;
}
set
{
_itemprice = value;
}
}
}
Service:
public class Service : IService
{
SqlConnection con=new SqlConnection(“Data Source=.\\SQLEXPRESS;AttachDbFilename=C:\\Users\\Shroff\\Documents\\Visual Studio 2010\\WebSites\\InventryFinal\\App_Data\\Database.mdf;Integrated Security=True;Connect Timeout=30;User Instance=True”);
SqlCommand cmd = new SqlCommand();
public void insert(customerdetails cd)
{
con.Open();
cmd = new SqlCommand(“sp_cdetails”, con);
cmd.CommandType = System.Data.CommandType.StoredProcedure;
cmd.Parameters.AddWithValue(“@cname”, cd.name);
cmd.Parameters.AddWithValue(“@caddress”, cd.address);
cmd.Parameters.AddWithValue(“@ccity”, cd.city);
cmd.Parameters.AddWithValue(“@cpincode”, cd.pincode);
cmd.Parameters.AddWithValue(“@cemail”, cd.email);
cmd.Parameters.AddWithValue(“@cphone”, cd.email);
cmd.Parameters.AddWithValue(“@cmobile”, cd.email);
cmd.Parameters.AddWithValue(“@cdate”, DateTime.Now.ToShortDateString());
cmd.ExecuteNonQuery();
}
public void additem(additemvariable aiv)
{
con.Open();
cmd = new SqlCommand(“sp_additem”, con);
cmd.CommandType = System.Data.CommandType.StoredProcedure;
cmd.Parameters.AddWithValue(“@itemname”, aiv.itemname);
cmd.Parameters.AddWithValue(“@itemprice”, aiv.itemprice);
cmd.ExecuteNonQuery();
}
}
ClassLibrary:
namespace Customerregister
{
public class Class1
{
ServiceReference1.ServiceClient sc = new ServiceReference1.ServiceClient();
ServiceReference1.customerdetails cds = new ServiceReference1.customerdetails();
ServiceReference1.additemvariable aditv = new ServiceReference1.additemvariable();
public void insert_customer(string cus_name, string cus_address, string cus_city, string cus_pincode, string cus_email, string cus_phone, string cus_mobile)
{
cds._cname = cus_name;
cds._caddress = cus_address;
cds._ccity = cus_city;
cds._cpincode = cus_pincode;
cds._cemail = cus_email;
cds._cphone = cus_phone;
cds._cmobile = cus_mobile;
sc.insert(cds);
}
public void addnewitem(string itemname, string itemprice)
{
aditv._itemname = itemname;
aditv._itemprice = itemprice;
sc.additem(aditv);
}
}
}
Registration.aspx:
Using customerregister;
protected void btn_reg_Click(object sender, EventArgs e)
{
Class1 clas=new Class1();
clas.insert_customer(txtusername.Text, txtaddress.Text, txtcity.Text, txtpin.Text, txtemail.Text, txtphone.Text, txtmobile.Text);
AddnewItem.aspx:
protected void Button1_Click(object sender, EventArgs e)
{
Class1 classes =new Class1();
classes.addnewitem(txtitemname.Text,txtitemprice.Text);
}
problem with for loop
I every time used to study piece of writing in news papers but now as I
am a user of net therefore from now I am using net
for posts, thanks to web.