how to add string and display new added string?

Sreenish

11y941.NET

hi everyone,

i want to add 10 strings in array and i have one textbox in that am going to add new array that need to be added as 11 string onclick of show button then again 12 string again it should be added to that 11 strings...and so on... how to do this??

am sharing what i have tried..

Source code::

<%@ Page Language="C#" AutoEventWireup="true" CodeBehind="arrytxt.aspx.cs" Inherits="Validators.Examples.arrytxt" %>

Code behind::

using System;

using System.Collections.Generic;

using System.Linq;

using System.Web;

using System.Web.UI;

using System.Web.UI.WebControls;

using System.Text;

namespace Validators.Examples

{

public partial class arrytxt : System.Web.UI.Page

{

protected void Page_Load(object sender, EventArgs e)

{

}

private List ResultArray

{

get

{

if (Session["resultArray"] == null)

Session["resultArray"] = new List();

return (List)Session["resultArray"];

}

protected void btnAdd_Click(object sender, EventArgs e)

{

ResultArray.Add(txtNewText.Text);

txtNewText.Text = string.Empty;

}

protected void btnShow_Click(object sender, EventArgs e)

{

StringBuilder sb = new StringBuilder();

foreach (string s in ResultArray)

{

sb.Append("
" + s);

}

lblResultingText.Text = sb.ToString();

}

Web application using C#..

8 Replies

Know the answer? Post it — somebody with the same question will find it here.

Manas Mohapatra11y ago
Accepted answer
if(ResultArray.Contains(textbox.Text))
{
//Display error message that it has duplicate value.
}
else
{
// Implement your logic to add in list
}
+1
Sumit Joshi11y ago
Posted a reply on Accepted answer.
0
Sreenish11y ago
Good? @sumith
0
Sumit Joshi11y ago
Good.
0
Sreenish11y ago
hi Manas,

i want to enter only new values in the textbox i mean what ever i have that strings that 10 strings ..if i type those string it should show message like duplicate string...if i add new one it should add..how to do this...??
0
Manas Mohapatra11y ago
private List ResultArray
{
get
{
if (ViewState["resultArray"] == null)
ViewState["resultArray"] = new List(){ "1", "2", "3", "4", "5", "6" "7", "8", "9", "10" };

return (List)ViewState["resultArray"];
}
}
+1
Sreenish11y ago
but i want to hard code 10 strings in that array how to to that

Resultarray.Add("abc") ;
Resultarray.Add("def") ;
...
...
same 10 then if am adding new string it should add as 11 string and should display onclick of show button...if am adding this on every time ist is showing all 10 plus 11 again all 10 plus12 like that
+1
Manas Mohapatra11y ago
Hi,
Best way to use ViewState instead of session. Please updated code.

using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Text;
namespace Validators.Examples
{
public partial class arrytxt : System.Web.UI.Page
{
protected void Page_Load(object sender, EventArgs e)
{
}

private List ResultArray
{
   get
   {
      if (ViewState["resultArray"] == null)
         ViewState["resultArray"] = new List();

      return (List)ViewState["resultArray"];
   }
}

protected void btnAdd_Click(object sender, EventArgs e)
{
   ResultArray.Add(txtNewText.Text);
   txtNewText.Text = string.Empty;
}

protected void btnShow_Click(object sender, EventArgs e)
{
   lblResultingText.Text = string.Join("
", ResultArray).ToString();
}
}
}
+1