admin/taocan/Add.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.Text;
using System.Data.SqlClient;
using System.Data;

public partial class admin_taocan_Add : System.Web.UI.Page
{
    protected void Page_Load(object sender, EventArgs e)
    {
        if (!IsPostBack)
        {
            info();
        }
    }
    protected void btnSave_Click(object sender, EventArgs e)
    {
        DbHelperSQL.ExecuteSql(" delete from taocan where leixing='"+this.leixing.Text+"'");
        //设置Sql
        StringBuilder strSql = new StringBuilder();
        strSql.Append(@"insert into taocan ( leixing,neirong ) ");
        strSql.Append(@" values (@leixing,@neirong)");

        //设置参数
        SqlParameter[] parameters = new SqlParameter[] {
            new SqlParameter("@leixing", SqlDbType.VarChar,50),
         new SqlParameter("@neirong", SqlDbType.NText,5000),
        };

        parameters[0].Value = leixing.Text;
        parameters[1].Value = this.Textarea1.Value;
        //提交到数据库
        DbHelperSQL.ExecuteSql(strSql.ToString(), parameters);


        MessageBox.ShowAndRedirect(this, "保存成功!", "Add.aspx");
    }
    protected void leixing_SelectedIndexChanged(object sender, EventArgs e)
    {
        info();
    }

    private void info()
    {
        StringBuilder strSql = new StringBuilder();
        strSql.Append(@"select * from taocan where leixing='" + this.leixing.Text + "'");

        //根据编号得到相应的记录
        DataSet ds = DbHelperSQL.Query(strSql.ToString());
        if (ds.Tables[0].Rows.Count > 0)
        {
            this.Textarea1.Value = ds.Tables[0].Rows[0]["neirong"].ToString();
        }
        else 
        {
            this.Textarea1.Value = "";