asp:GridView not visible.

I would assume there is no data to be displayed in the grid. I think the GridView control has an EmptyDataText property or similar for this scenario but you'd have to look it up to get the specifics.

Have you written code in codebehind ?
first bind data with column ItemID, ItemDescription.

http://msdn.microsoft.com/en-us/library/aa479342.aspx try this example

Step 1:

To create Gridview.

Step 2:

Then to Bind the data to grid through to add DataSource or using following c# coding.

con.open();
string query = "Select pk,name,mrpr,discount,sellp,pphoto from prode";
SqlDataAdapter sda = new SqlDataAdapter(query, con);
DataSet ds = new DataSet();
sda.Fill(ds);
GridView1.DataSource = ds;
GridView1.DataBind();
con.close();

http://msdn.microsoft.com/hi-in/beginner/default(en-us).aspx


Regard
Hitendra Lariya

you may try this template

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Windows.Forms;
using System.Data.SqlClient;

namespace WindowsFormsApplication1
{
    public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();
        }
        private void groupBox1_Enter(object sender, EventArgs e)
        {
        }
        private void addbutton_Click(object sender, EventArgs e)
        {
            panel2.Hide();
            panel1.Show();
        }
        private void showbutton_Click(object sender, EventArgs e)
        {
            panel1.Hide();
            panel2.Hide();
            //Create connection here
            SqlConnection cn = new SqlConnection(@"Data Source=.\SQLEXPRESS;AttachDbFilename=C:\Users\FASTRACK\Documents\vb.mdf;Integrated Security=True;Connect Timeout=30;User Instance=True");
            string select = "select * from customer";
            SqlCommand cmd = new SqlCommand(select, cn);
            // Connection open here
            cn.Open();
            //create datatable object and use datagrid to show data
            DataTable dt = new DataTable();
            SqlDataAdapter da = new SqlDataAdapter(cmd);
            da.Fill(dt);
            dataGridView1.DataSource = dt;
            //connection close here
            cn.Close();
        }
        private void button1_Click(object sender, EventArgs e)
        {
             //Create connection here
            
            SqlConnection cn = new SqlConnection(@"Data Source=.\SQLEXPRESS;AttachDbFilename=C:\Users\FASTRACK\Documents\vb.mdf;Integrated Security=True;Connect Timeout=30;User Instance=True");
            string add = "insert into customer(cname,cadd,cmobile) values(@cname,@cadd,@cmobile)";
            SqlCommand cmd = new SqlCommand(add, cn);
            // Connection open here
            cn.Open();
            if (textBox1.Text == "" || textBox2.Text == "" || textBox3.Text == "")
            {
                errorProvider1.SetError(button1, "No text box should be emty");
               
            }
            else
            {
                //Pass value from text box
                cmd.Parameters.AddWithValue("cname", textBox1.Text);
                cmd.Parameters.AddWithValue("cadd", textBox2.Text);
                cmd.Parameters.AddWithValue("cmobile", textBox3.Text);
                cmd.ExecuteNonQuery();
                //Connection close here
                cn.Close();
                MessageBox.Show("Record Added successfully", "Record Added", MessageBoxButtons.OK);
                panel1.Hide();
            }

        }
        private void deletebutton_Click(object sender, EventArgs e)
        {
            //Create connection here
            SqlConnection cn = new SqlConnection(@"Data Source=.\SQLEXPRESS;AttachDbFilename=C:\Users\FASTRACK\Documents\vb.mdf;Integrated Security=True;Connect Timeout=30;User Instance=True");
            string delete = "delete from customer where cname=@cname";
            SqlCommand cmd = new SqlCommand(delete, cn);
            // Connection open here
            cn.Open();
            //delete row from database
            
        
           
            
            // Connection close here
            cn.Close();
        }
        private void updatebutton_Click(object sender, EventArgs e)
        {
            panel1.Hide();
            panel2.Show();
        }
        private void button2_Click(object sender, EventArgs e)
        {
            //Create connection here
            SqlConnection cn = new SqlConnection(@"Data Source=.\SQLEXPRESS;AttachDbFilename=C:\Users\FASTRACK\Documents\vb.mdf;Integrated Security=True;Connect Timeout=30;User Instance=True");
            string update = "insert into customer(cname,cadd,cmobile) values(@cname,@cadd,@cmobile)";
            SqlCommand cmd = new SqlCommand(update, cn);
            // Connection open here
            cn.Open();
           
           
            if (textBox4.Text == "" || textBox5.Text == "" || textBox6.Text == "")
            {
                errorProvider1.SetError(button1, "No text box should be emty");
            }
            else
            {
                //Pass value from text box
                cmd.Parameters.AddWithValue("cname", textBox4.Text);
                cmd.Parameters.AddWithValue("cadd", textBox5.Text);
                cmd.Parameters.AddWithValue("cmobile", textBox6.Text);
                cmd.ExecuteNonQuery();
                //Connection close here
                cn.Close();
                MessageBox.Show("Record Added successfully", "Record update", MessageBoxButtons.OK);
                panel2.Hide();
            }
        }
        private void Form1_Load(object sender, EventArgs e)
        {
        }
    }
}

ok follows the following steps

1. click on data gried view in tool box (ALt Ctrl X) under data categeory

2.click on right top of fried view box

3. you have option to add columns etc.