Gridview Validation using javascript array value

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C#

ASP.NET

Javascript

Hi
I declare the code in console is below .this is used for gridview binding, new row data insert,edit, update, delete.

I need to validate all the footer row textboxs when i click the insert button by using JavaScript.

I dont have any idea in JavaScript.

using System.Configuration;
using System.Data;
using System.Linq;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.HtmlControls;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Xml.Linq;
using System.Data.SqlClient;
using System.Web.Configuration;
using System;
public partial class _Default : System.Web.UI.Page
{
    SqlConnection con = new SqlConnection(ConfigurationManager.ConnectionStrings["empDBConnectionString"].ConnectionString);

    protected void Page_Load(object sender, System.EventArgs e)
    {
        //Button btnInsert = (Button)GridView1.FooterRow.FindControl("btnInsert");
        //btnInsert.Attributes.Add("onclick", "return validate()");



        if (!IsPostBack)
        {
            GridFill();
        }
         
       
       
    }

    protected void GridFill()
    {
        try
        {
            con.Open();
            SqlCommand cmd = new SqlCommand("Select * from emp", con);
            SqlDataAdapter da = new SqlDataAdapter(cmd);
            DataSet ds = new DataSet();
            da.Fill(ds);
            con.Close();
            if (ds.Tables[0].Rows.Count > 0)
            {
                GridView1.DataSource = ds;
                GridView1.DataBind();

            }
            else
            {
                ds.Tables[0].Rows.Add(ds.Tables[0].NewRow());
                GridView1.DataSource = ds;
                GridView1.DataBind();
                int columncount = GridView1.Rows[0].Cells.Count;
                GridView1.Rows[0].Cells.Clear();
                GridView1.Rows[0].Cells.Add(new TableCell());
                GridView1.Rows[0].Cells[0].ColumnSpan = columncount;
                GridView1.Rows[0].Cells[0].Text = "No Records Found";
            }
        }
        catch
        {

        }
    }



    protected void GridView1_RowCommand(object sender, GridViewCommandEventArgs e)
    {
        if (e.CommandName.Equals("Insert"))
        {
            try
            {
                TextBox txtname = GridView1.FooterRow.FindControl("txtempname1") as TextBox;
                TextBox txtage = GridView1.FooterRow.FindControl("txtempage1") as TextBox;
                TextBox txtEmail = GridView1.FooterRow.FindControl("txtempemail1") as TextBox;
                DropDownList ddlgender = GridView1.FooterRow.FindControl("ddlempgender1") as DropDownList;
                SqlCommand cmd = new SqlCommand("insert into emp values(@empname,@empage,@empemail,@empgender)", con);
                cmd.Parameters.Add("@empname", SqlDbType.VarChar).Value = txtname.Text;
                cmd.Parameters.Add("@empage", SqlDbType.VarChar).Value = txtage.Text;
                cmd.Parameters.Add("@empemail", SqlDbType.VarChar).Value = txtEmail.Text;
                cmd.Parameters.Add("@empgender", SqlDbType.VarChar).Value = Convert.ToString(ddlgender.Text);
                con.Open();
                cmd.ExecuteNonQuery();

                con.Close();

                GridFill();
            }
            catch
            {
            }
        }




    }
    protected void GridView1_RowUpdating(object sender, GridViewUpdateEventArgs e)
    {
        //SqlCommand cmd = new SqlCommand("update  emp set empname=@empname,empage=@empage,empemail=@empemail,empgender=@empgender where empid=@empid", con);

        Label lblempid1 = GridView1.Rows[e.RowIndex].FindControl("lblempid") as Label;
        TextBox txtname = GridView1.Rows[e.RowIndex].FindControl("txtempname") as TextBox;
        TextBox txtage = GridView1.Rows[e.RowIndex].FindControl("txtempage") as TextBox;
        TextBox txtEmail = GridView1.Rows[e.RowIndex].FindControl("txtempemail") as TextBox;
        DropDownList ddlgender = GridView1.Rows[e.RowIndex].FindControl("ddlempgender") as DropDownList;
        SqlCommand cmd = new SqlCommand("update  emp set empname='" + txtname.Text + "',empage='" + txtage.Text + "',empemail='" + txtEmail.Text + "',empgender='" + ddlgender.SelectedValue + "' where empid='" + lblempid1.Text + "'", con);
        //cmd.Parameters.Add("@empid", SqlDbType.Int).Value = Convert.ToInt32(lblempid1.Text);
        //cmd.Parameters.Add("@empname", SqlDbType.VarChar).Value = txtname.Text;
        //cmd.Parameters.Add("@empage", SqlDbType.Int).Value = txtage.Text;
        //cmd.Parameters.Add("@empemail", SqlDbType.VarChar).Value = txtEmail.Text;
        //cmd.Parameters.Add("@empgender", SqlDbType.VarChar).Value = ddlgender.SelectedValue;
        con.Open();
        cmd.ExecuteNonQuery();
        con.Close();
        GridView1.EditIndex = -1;
        GridFill();
        Response.Write("Row Updated");


    }


    protected void GridView1_RowDeleting1(object sender, GridViewDeleteEventArgs e)
    {

        int empid = Convert.ToInt32(GridView1.DataKeys[e.RowIndex].Value); 

        SqlCommand cmd = new SqlCommand("DELETE FROM emp WHERE EMPID=" + empid + "", con);
        con.Open();
        int temp = cmd.ExecuteNonQuery();
        if (temp == 1)
        {
            Response.Write("Row Deleted");
        }
        con.Close();
        GridFill();
    }

    protected void GridView1_RowCancelingEdit1(object sender, GridViewCancelEditEventArgs e)
    {
        GridView1.EditIndex = -1;
        GridFill();
    }
    protected void GridView1_RowEditing(object sender, GridViewEditEventArgs e)
    {

        GridView1.EditIndex = e.NewEditIndex;
        GridFill();
    }
    protected void GridView1_SelectedIndexChanged(object sender, EventArgs e)
    {
        string sValue = ((HiddenField)GridView1.SelectedRow.Cells[0].FindControl("HiddenField1")).Value;
        GridFill();
        Response.Write("Product Id=" + sValue);
    }




    //protected void Button2_Click(object sender, EventArgs e)
    //{
    //    if (!(Session["empid"] == null))
    //    {
    //        lblempid.Text = Session["empid"].ToString();
    //    }
    //         Server.Transfer("empdetails.aspx");
    //}
    protected void Button1_Click(object sender, EventArgs e)
    {
        Response.Redirect("empdetails.aspx");
    }
    protected void GridView1_PreRender(object sender, EventArgs e)
    {

        ClientScriptManager cs = Page.ClientScript;



        TextBox lblempid = (TextBox)GridView1.FooterRow.FindControl("lblempid");

        TextBox txtempname = (TextBox)GridView1.FooterRow.FindControl("txtempname1");

        TextBox txtempage = (TextBox)GridView1.FooterRow.FindControl("txtempage1");

        TextBox txtempemail = (TextBox)GridView1.FooterRow.FindControl("txtempemail1");

        cs.RegisterArrayDeclaration("grd_vb", string.Concat("'", lblempid.ClientID, "'"));

        cs.RegisterArrayDeclaration("grdName_Txt", String.Concat("'", txtempname.ClientID, "'"));

        cs.RegisterArrayDeclaration("grdAge_Int", String.Concat("'", txtempage.ClientID, "'"));

        cs.RegisterArrayDeclaration("grdEmail_Txt", String.Concat("'", txtempemail.ClientID, "'"));





    }

    //protected void GridView1_Sorting(object sender, GridViewSortEventArgs e)
    //{
    //    Response.Write("EmpName:" + e.SortExpression);
    //    //e.SortExpression will provide colomn name selected by user  

    //    SqlDataAdapter da = new SqlDataAdapter("select * from emp orderby empname" + e.SortExpression, con);
    //    DataSet ds = new DataSet();
    //    da.Fill(ds, "emp");
    //    GridView1.DataSource = ds.Tables["emp"];
    //    GridView1.DataBind();
    //}
}

I need to validate all the footer row textbox when i click the insert button using javascript. What could I do. Any one kindly assist me.

Thanks