banjiUpdate.aspx.cs

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using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Data;

public partial class banjiUpdate : System.Web.UI.Page
{
    protected void Page_Load(object sender, EventArgs e)
    {
        if (!IsPostBack)
        {
            string sql;
            sql = "select * from banji where id=" + Request.QueryString["id"].ToString().Trim();
            DataSet result = new DataSet();
            result = new Class1().hsggetdata(sql);
            if (result.Tables[0].Rows.Count > 0)
            {
                this.banjiName.Text = result.Tables[0].Rows[0]["banjiName"].ToString().Trim();
            }
        }
    }

    protected void Button1_Click(object sender, EventArgs e)
    {
        string banjiName = this.banjiName.Text;
        string strsql = "select * from banji where banjiName='" + banjiName + "' and id !=" + Request.QueryString["id"].ToString().Trim() + "";
        DataSet result = new DataSet();
        result = new Class1().hsggetdata(strsql);
        if (result.Tables[0].Rows.Count > 0)
        {
            Response.Write("<script>javascript:alert('班级已经存在，不能重复！');</script>");
            return;
        }
        strsql = "Update banji set banjiName ='" + banjiName + "' where ID=" + Request.QueryString["id"].ToString().Trim() + "";
        int n;
        n = new Class1().hsgexucute(strsql);
        if (n == 1)
        {
            Response.Write("<script language=javascript>alert('修改成功！');location='banjiManage.aspx'</script>");
        }
        else
        {
            Response.Write("<script>javascript:alert('系统错误，请检查数据库的连接！');</script>");
        }
    }
}