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using System;
using System.Data;
using System.Configuration;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Web.UI.HtmlControls;
using System.Data.SqlClient;

public partial class _Default : System.Web.UI.Page
{
    protected void Page_Load(object sender, EventArgs e)
    {
        if (!Page.IsPostBack)
        {
            createGridView();
        }

    }

    private void createGridView()
    {
        SqlConnection con = DB.createConnection();
        SqlDataAdapter sda = new SqlDataAdapter();
        sda.SelectCommand = new SqlCommand("select * from employee", con);
        DataSet ds = new DataSet();
        sda.Fill(ds, "emp");
        GridView1.DataKeyNames = new string[] { "ID" };
        GridView1.DataSource = ds.Tables["emp"];
        GridView1.DataBind();
    }
    protected void GridView1_PageIndexChanging(object sender, GridViewPageEventArgs e)
    {
        GridView1.PageIndex = e.NewPageIndex;
        createGridView();
    }
    protected void btnClick_Click(object sender, EventArgs e)
    {
        GridView1.Columns[2].Visible = false;
        createGridView();
    }
    protected void Button2_Click(object sender, EventArgs e)
    {
        GridView1.Columns[2].Visible = true;
        createGridView();
    }
    protected void GridView1_RowDataBound(object sender, GridViewRowEventArgs e)
    {
        if (e.Row.RowType == DataControlRowType.DataRow)
        {
            e.Row.Attributes.Add("onmouseover", "c=this.style.backgroundColor;this.style.backgroundColor='#cccccc'");
            e.Row.Attributes.Add("onmouseout", "this.style.backgroundColor=c");
            // ((LinkButton)(e.Row.Cells[4].Controls[0])).Attributes.Add("onclick", "return confirm('确认删除吗？')");
        }
    }
    protected void GridView1_Sorting(object sender, GridViewSortEventArgs e)
    {
        if (ViewState["Order"] == null)
        {
            ViewState["Order"] = "ASC";
        }
        else
        {
            if (ViewState["Order"].ToString() == "ASC")
            {
                ViewState["Order"] = "DESC";
            }
            else
            {
                ViewState["Order"] = "ASC";
            }
        }
        SqlConnection con = DB.createConnection();
        SqlDataAdapter sda = new SqlDataAdapter();
        sda.SelectCommand = new SqlCommand("select * from employee", con);
        DataSet ds = new DataSet();
        sda.Fill(ds, "emp");
        ds.Tables["emp"].DefaultView.Sort = e.SortExpression+" "+ViewState["Order"].ToString();
        GridView1.DataSource = ds.Tables["emp"].DefaultView;
        GridView1.DataBind();
    }

    protected void GridView1_RowDeleting(object sender, GridViewDeleteEventArgs e)
    {
        string empID = GridView1.DataKeys[e.RowIndex].Value.ToString();
        SqlConnection con=DB.createConnection();
        con.Open();
        SqlCommand cmd=new SqlCommand("delete employee where ID='"+empID+"'",con);
        cmd.ExecuteNonQuery();
        con.Close();
        createGridView();
    }
    protected void GridView1_RowEditing(object sender, GridViewEditEventArgs e)
    {
        GridView1.EditIndex = e.NewEditIndex;
        createGridView();
    }
    protected void GridView1_RowCancelingEdit(object sender, GridViewCancelEditEventArgs e)
    {
        GridView1.EditIndex = -1;
        createGridView();
    }
    protected void GridView1_RowUpdating(object sender, GridViewUpdateEventArgs e)
    {
        string empID = GridView1.DataKeys[e.RowIndex].Value.ToString();
        string name = ((TextBox)GridView1.Rows[e.RowIndex].Cells[1].FindControl("TextBox2")).Text;
        string age = ((TextBox)GridView1.Rows[e.RowIndex].Cells[2].FindControl("TextBox1")).Text;
        string address = ((TextBox)GridView1.Rows[e.RowIndex].Cells[3].FindControl("TextBox3")).Text;
        SqlConnection con = DB.createConnection();
        con.Open();
        SqlCommand cmd = new SqlCommand("update employee set fullName='" + name + "',age='" + age + "',address='" + address + "' where ID='" + empID + "'", con);
        cmd.ExecuteNonQuery();
        con.Close();
        createGridView();
        
    }
}