Creating Dynamic Grid-view Worked Like Excel Sheet

Rojalin Sahoo

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19 May 2015CPOL

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Creating dynamic grid-view worked like an Excel sheet

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Introduction

This tip is about how to create a dynamic grid view (like Excel sheet) with template field and save input data into database. Sometimes, it felt that Excel sheet is better to input data whenever we select multiple data stores than a form.

Using the Code

Let’s start with database. Create a table named as user.

Creating Stored Procedure for the Table

SQL

Create proc SP_USER
@name nvarchar(200) ,
@name_desc nvarchar(500)
as 
begin
insert into user (name,name_desc) values(@name,@name_desc)
end

Designer Source Code

HTML

<%@ Page Language="C#" AutoEventWireup="true" CodeBehind="index.aspx.cs" Inherits="Excelgrid.index" %>

<!DOCTYPE html>

<html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">
  <title></title>
</head>
<body>
   <form id="form1" runat="server">
   <table>
   <tr><td>
     <asp:GridView ID="excelgrd" runat="server" CellPadding="4" 
       ForeColor="#333333" GridLines="None" AutoGenerateColumns="false" ShowFooter="true">
      <AlternatingRowStyle BackColor="White" />
      <EditRowStyle BackColor="#7C6F57" />
      <FooterStyle BackColor="#1C5E55" Font-Bold="True" ForeColor="White" />
      <HeaderStyle BackColor="#1C5E55" Font-Bold="True" ForeColor="White" />
      <PagerStyle BackColor="#666666" ForeColor="White" HorizontalAlign="Center" />
      <RowStyle BackColor="#E3EAEB" />
      <SelectedRowStyle BackColor="#C5BBAF" Font-Bold="True" ForeColor="#333333" />
      <SortedAscendingCellStyle BackColor="#F8FAFA" />
      <SortedAscendingHeaderStyle BackColor="#246B61" />
      <SortedDescendingCellStyle BackColor="#D4DFE1" />
      <SortedDescendingHeaderStyle BackColor="#15524A" />
      <Columns>
          <asp:BoundField DataField="Slno" HeaderText="SL No" />
          <asp:TemplateField HeaderText="Name">
          <ItemTemplate>
              <asp:TextBox ID="txnm" runat="server"></asp:TextBox>
          </ItemTemplate>
          </asp:TemplateField>
          <asp:TemplateField HeaderText="Description">
          <ItemTemplate>
              <asp:TextBox ID="txdesc" runat="server"></asp:TextBox>
          </ItemTemplate>
          <FooterStyle HorizontalAlign="Right" />
          <FooterTemplate>
              <asp:Button ID="ADDBTN" runat="server" Text="Add New Row" OnClick="ADDBTN_Click" />
          </FooterTemplate>
          </asp:TemplateField>
      </Columns>
      </asp:GridView></td>
      </tr>
      <tr>
      <td>
         <asp:Button ID="btnsave" runat="server" Text="Save" OnClick="svbtn_Click" /></td></tr>
      </table>
  </form>
</body>
</html>

C# Code

using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Data;
using System.Data.SqlClient;
using System.Configuration;
 
namespace Excelgrid
{
public partial class index : System.Web.UI.Page
{
   SqlConnection con = new SqlConnection(ConfigurationManager.ConnectionStrings["CONN"].ToString());
   protected void Page_Load(object sender, EventArgs e)
   {
      if (!IsPostBack)
       {
         bindgrd();//bind your grid
       }
   }
   private void bindgrd()
   {
      DataTable dt = new DataTable();
      DataRow dr = null;
      dt.Columns.Add(new DataColumn("Slno", typeof(string)));
      dt.Columns.Add(new DataColumn("Name", typeof(string)));
      dt.Columns.Add(new DataColumn("Desc", typeof(string)));
      dr = dt.NewRow();
      dr["Slno"] = 1;
      dr["Name"] = string.Empty;
      dr["Desc"] = string.Empty;
      dt.Rows.Add(dr);
      //Store the DataTable in ViewState
      ViewState["CurrentTable"] = dt;
      excelgrd.DataSource = dt;
      excelgrd.DataBind();
   }
   protected void addnewrow()
   {
       int rowIndex = 0;

       if (ViewState["CurrentTable"] != null)
       {
          DataTable dtCurrentTable = (DataTable)ViewState["CurrentTable"];
          DataRow drCurrentRow = null;
          if (dtCurrentTable.Rows.Count > 0)
          {
            for (int i = 1; i <= dtCurrentTable.Rows.Count; i++)
              {
                //extract the TextBox values
                TextBox tx1 = (TextBox)excelgrd.Rows[rowIndex].Cells[1].FindControl("txnm");
                TextBox tx2 = (TextBox)excelgrd.Rows[rowIndex].Cells[2].FindControl("txdesc");

                drCurrentRow = dtCurrentTable.NewRow();
                drCurrentRow["Slno"] = i + 1;

                dtCurrentTable.Rows[i - 1]["Name"] = tx1.Text;
                dtCurrentTable.Rows[i - 1]["Desc"] = tx2.Text;

               rowIndex++;
             }
           dtCurrentTable.Rows.Add(drCurrentRow);
           ViewState["CurrentTable"] = dtCurrentTable;

           excelgrd.DataSource = dtCurrentTable;
           excelgrd.DataBind();
         }
      }
      else
      {
        Response.Write("ViewState is null");
      }

      //Set Previous Data on Postbacks
      SetPreviousData();
   }
   private void SetPreviousData()
   {
     int rowIndex = 0;
     if (ViewState["CurrentTable"] != null)
     {
         DataTable dt = (DataTable)ViewState["CurrentTable"];
         if (dt.Rows.Count > 0)
         {
            for (int i = 0; i < dt.Rows.Count; i++)
            {
                TextBox tx1 = (TextBox)excelgrd.Rows[rowIndex].Cells[1].FindControl("txnm");
                TextBox tx2 = (TextBox)excelgrd.Rows[rowIndex].Cells[2].FindControl("txdesc");
                tx1.Text = dt.Rows[i]["Name"].ToString();
                tx2.Text = dt.Rows[i]["Desc"].ToString();
                rowIndex++;
             }
         }
     }
   }
   protected void svbtn_Click(object sender, EventArgs e)
   {
         foreach (GridViewRow r in excelgrd.Rows)
         {
             string des = (r.FindControl("txdesc") as TextBox).Text;
             string nm = (r.FindControl("txnm") as TextBox).Text;

             try
             {
                  if(nm !="" || des != "")
                  {
                     con.Open();
                     SqlCommand sql = new SqlCommand("SP_User", con);
                     sql.CommandType = CommandType.StoredProcedure;
                     sql.Parameters.AddWithValue("@name", nm);
                     sql.Parameters.AddWithValue("@name_Desc", des);
                     sql.ExecuteNonQuery();
                     sql.Dispose();
                   }
              }
              catch (Exception e1)
              {
                   string error = e1.ToString();
              }
              finally
              {
                  con.Close();

              }

          }
    }
    protected void ADDBTN_Click(object sender, EventArgs e)
    {
         addnewrow();
    }

   }
}

Result of the above code is as shown below:

Result

License

This article, along with any associated source code and files, is licensed under The Code Project Open License (CPOL)

Written By

Rojalin Sahoo

Software Developer ComputoIT Solutions Pvt. Ltd.

India

This member has not yet provided a Biography. Assume it's interesting and varied, and probably something to do with programming.

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