0

I am using ASP.NET(web form) with C#.

using System;
using System.Collections;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Web;
using System.Web.SessionState;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.HtmlControls;
using System.Data.SqlClient;

namespace Simpleweb
{
	/// <summary>
	/// Summary description for WebForm1.
	/// </summary>
	
	public class WebForm1 : System.Web.UI.Page
	{
		protected System.Web.UI.WebControls.Label Label1;
		protected System.Web.UI.WebControls.TextBox TextBox3;
		protected System.Web.UI.WebControls.Label Label3;
		protected System.Web.UI.WebControls.TextBox TextBox2;
		protected System.Web.UI.WebControls.TextBox TextBox1;
		protected System.Web.UI.WebControls.Label Label2;
		protected System.Web.UI.WebControls.Button show;
		protected System.Web.UI.WebControls.Button last;
		protected System.Web.UI.WebControls.Button next;
		protected System.Web.UI.WebControls.Button prev;
		protected System.Web.UI.WebControls.Button first;
		protected System.Web.UI.WebControls.Button delete;
		protected System.Web.UI.WebControls.Button update;
		protected System.Web.UI.WebControls.LinkButton clear;
		protected System.Web.UI.WebControls.Label Label4;
		protected System.Web.UI.WebControls.TextBox TextBox4;
		protected System.Web.UI.WebControls.Label Label5;
		protected System.Web.UI.WebControls.Button add;
	
		SqlConnection cn;
		
		SqlDataAdapter daadapter;
		SqlCommandBuilder cmdb;
		DataTable dt;
		int position;
		
		DataRow dr;
		private void Page_Load(object sender, System.EventArgs e)
		{
			cn=new SqlConnection("user id=sa;password=sa;server=raja;database=practice");
			cn.Open();
			//cmd = new SqlCommand("SELECT uid,uname,upassword,umailid FROM userdetails",cn);
			daadapter = new SqlDataAdapter("Select * From userdetails",cn);
			cmdb = new SqlCommandBuilder(daadapter);
			dt = new DataTable();
			//position=0;
			daadapter.Fill(dt);
			dr = dt.Rows[0];
			//SqlCommand cmd = new SqlCommand("SELECT uid,uname,upassword,umailid FROM userdetails",cn);
			//SqlDataAdapter daadapter = new SqlDataAdapter("Select * From userdetails",cn);
			//SqlCommandBuilder cmdb = new SqlCommandBuilder(daadapter);
			//DataTable dt = new DataTable();
			
			//daadapter.Fill(dt);
			//DataRow dr = dt.Rows[0];
			
		}
		private void ShowCurrentRecord()
		{

			
				// The offending code here.
				if (dt.Rows.Count==0)
				{
					TextBox1.Text = "";
					TextBox2.Text = "";
					TextBox3.Text = "";
					TextBox4.Text = "";
					return;
				}
				TextBox1.Text = dt.Rows[position]["uid"].ToString();
				TextBox2.Text = dt.Rows[position]["uname"].ToString();
				TextBox3.Text = dt.Rows[position]["upassword"].ToString();
				TextBox4.Text = dt.Rows[position]["umailid"].ToString();
				return;
			
			
			
		}
		
		#region Web Form Designer generated code
		override protected void OnInit(EventArgs e)
		{
			//
			// CODEGEN: This call is required by the ASP.NET Web Form Designer.
			//
			
			InitializeComponent();
			base.OnInit(e);
			
		}
		
		/// <summary>
		/// Required method for Designer support - do not modify
		/// the contents of this method with the code editor.
		/// </summary>
		private void InitializeComponent()
		{    
			this.clear.Click += new System.EventHandler(this.clear_Click);
			this.show.Click += new System.EventHandler(this.show_Click);
			this.last.Click += new System.EventHandler(this.last_Click);
			this.next.Click += new System.EventHandler(this.next_Click);
			this.prev.Click += new System.EventHandler(this.prev_Click);
			this.first.Click += new System.EventHandler(this.first_Click);
			this.delete.Click += new System.EventHandler(this.delete_Click);
			this.update.Click += new System.EventHandler(this.update_Click);
			this.add.Click += new System.EventHandler(this.add_Click);
			this.Load += new System.EventHandler(this.Page_Load);

		}
		#endregion

		private void show_Click(object sender, System.EventArgs e)
		{
			this.ShowCurrentRecord();
		}

		private void clear_Click(object sender, System.EventArgs e)
		{
			TextBox1.Text="";
			TextBox2.Text="";
			TextBox3.Text="";
			TextBox4.Text="";
		}

		private void add_Click(object sender, System.EventArgs e)
		{
			
			SqlConnection cn=new SqlConnection("user id=sa;password=sa;server=raja;database=practice");
			
			cn.Open();

			SqlCommand da=new SqlCommand("INSERT INTO userdetails(uname,upassword,umailid) VALUES ('"+TextBox2.Text+"','"+TextBox3.Text+"','"+TextBox4.Text+"')",cn);
			da.ExecuteNonQuery();	
	
			cn.Close();

			
		}

		private void update_Click(object sender, System.EventArgs e)
		{
			if (TextBox2.Text=="")
			{
				Label5.Text="Please enter the name";
			}
			else if (TextBox3.Text=="")
			{
				Label5.Text="Please enter the Password";
			}
			else if (TextBox4.Text=="")
			{
				Label5.Text="Please enter your EmailId";
			}
			else
			{
				Label5.Text="";
				SqlConnection cn=new SqlConnection("user id=sa;password=sa;server=raja;database=practice");
				cn.Open();
			
				SqlCommand cmd=new SqlCommand("UPDATE userdetails SET uname='"+TextBox2.Text+"',upassword='"+TextBox3.Text+"',umailid='"+TextBox4.Text+"' where uid='"+TextBox1.Text+"'",cn);
				cmd.ExecuteNonQuery();
				cn.Close();
			}

		}

		private void delete_Click(object sender, System.EventArgs e)
		{
			SqlConnection cn=new SqlConnection("user id=sa;password=sa;server=raja;database=practice");
			cn.Open();
			
			SqlCommand cmd=new SqlCommand("DELETE FROM userdetails WHERE uid='"+TextBox1.Text+"'",cn);
			cmd.ExecuteNonQuery();
			cn.Close();	
			TextBox1.Text="";
			TextBox2.Text="";
			TextBox3.Text="";
			TextBox4.Text="";
		}

		private void first_Click(object sender, System.EventArgs e)
		{
			
			this.ShowCurrentRecord();
		}

		private void prev_Click(object sender, System.EventArgs e)
		{
			Response.Write(position);
			if (position > 0)
			{
				position = position-1;
				this.ShowCurrentRecord();
			}
		}

		private void next_Click(object sender, System.EventArgs e)
		{
			Response.Write(position);
			if (position < dt.Rows.Count-1)
			{
				position = position + 1;
				this.ShowCurrentRecord();
			}
		}

		private void last_Click(object sender, System.EventArgs e)
		{
			Response.Write(position);
			if ((dt.Rows.Count) !=0)
			{
				position = dt.Rows.Count-1;
				this.ShowCurrentRecord();
			}
		}
	}
}

In the above code i have the problem of
i can use the first,previous,next,last buttons in the web form.when i am click on first and last buttons then it shows the correct records.but when i click on prev,next buttons then it take position=0,every time the position value is set to '0' only.
Please help me. what is the problem in it.?

2
Contributors
1
Reply
2
Views
8 Years
Discussion Span
Last Post by Ramy Mahrous
This topic has been dead for over six months. Start a new discussion instead.
Have something to contribute to this discussion? Please be thoughtful, detailed and courteous, and be sure to adhere to our posting rules.