• asp.net 查询,导出


    using System;
    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.Globalization;
    using System.IO;

    public partial class _PIE_Project : System.Web.UI.Page
    {

        protected System.Data.SqlClient.SqlConnection SqlConnection1;
        protected System.Data.SqlClient.SqlDataAdapter SqlDataAdapter1;
        protected System.Data.DataSet DataSet1;
        protected System.Data.DataSet DataSet2;
        string Str_sql = "";

        protected void Page_Load(object sender, EventArgs e)
        {
            if (!IsPostBack)
            {
                P_ht.H_data P_data = new P_ht.H_data();
                P_data.sql_text1 = " SELECT [projectName], [WorkName], [PlanEndDate], [PlanStartDate] FROM [PJ_WorkPiece] ";
                Str_sql = P_data.sql_text1;
                P_data.select_tables();
                DataSet1 = P_data.DataSet8;
                Session["r1_PJ_WorkPiece"] = this.DataSet1;

                this.GridView1.DataSource = DataSet1;
                this.GridView1.DataBind();

            }
        }


        protected void Btn_search_Click(object sender, EventArgs e)
        {
            string m_Where = "";
           
            //
            //// 正则表示式验证
            //

            //
            //// check
            //
            ////  Response.Write("非标准日期");

            DateTime dt1,dt2;

            //
            if ((this.TextBox1.Text.Trim() != "") && (this.TextBox2.Text.Trim() != ""))
            {
                if (DateTime.TryParseExact(this.TextBox1.Text.Trim(), "yyyy-MM-dd", null, DateTimeStyles.None, out dt1))
                {
                    //验证通过
                }
                else
                {
                    ClientScriptManager scriptManager = ((Page)System.Web.HttpContext.Current.Handler).ClientScript;
                    scriptManager.RegisterStartupScript(typeof(string), "", "alert('提示: 项目开始日期不是日期格式! ');", true);
                    return;
                }

                if (DateTime.TryParseExact(this.TextBox2.Text.Trim(), "yyyy-MM-dd", null, DateTimeStyles.None, out dt2))
                {
                    //验证通过
                }
                else
                {
                    ClientScriptManager scriptManager = ((Page)System.Web.HttpContext.Current.Handler).ClientScript;
                    scriptManager.RegisterStartupScript(typeof(string), "", "alert('提示: 项目截止日期不是日期格式! ');", true);
                    return;
                }

                ////
                if ((dt2 < dt1))
                {
                    ClientScriptManager scriptManager = ((Page)System.Web.HttpContext.Current.Handler).ClientScript;
                    scriptManager.RegisterStartupScript(typeof(string), "", "alert('提示: 项目开始日期不能大于项目截止日期! ');", true);
                    return;
                }
                else
                {
                    m_Where += (m_Where == "" ? "" : " and ") + " PlanStartDate Between '" + this.TextBox1.Text.Trim() + "' and '" + this.TextBox2.Text.Trim() + "'";
                }
            }
            else
            {
                if ((this.TextBox1.Text.Trim() != "") && (this.TextBox2.Text.Trim() == ""))
                {
                    if (DateTime.TryParseExact(this.TextBox1.Text.Trim(), "yyyy-MM-dd", null, DateTimeStyles.None, out dt1))
                    {
                        //验证通过
                        m_Where += (m_Where == "" ? "" : " and ") + " PlanStartDate > '" + this.TextBox1.Text.Trim() + "' ";
                    }
                    else
                    {
                        ClientScriptManager scriptManager = ((Page)System.Web.HttpContext.Current.Handler).ClientScript;
                        scriptManager.RegisterStartupScript(typeof(string), "", "alert('提示: 项目开始日期不是日期格式! ');", true);
                        return;
                    }
                }
                else
                {
                    if ((this.TextBox1.Text.Trim() == "") && (this.TextBox2.Text.Trim() != ""))
                    {
                        if (DateTime.TryParseExact(this.TextBox2.Text.Trim(), "yyyy-MM-dd", null, DateTimeStyles.None, out dt1))
                        {
                            //验证通过
                            m_Where += (m_Where == "" ? "" : " and ") + " PlanStartDate < '" + this.TextBox2.Text.Trim() + "' ";
                        }
                        else
                        {
                            ClientScriptManager scriptManager = ((Page)System.Web.HttpContext.Current.Handler).ClientScript;
                            scriptManager.RegisterStartupScript(typeof(string), "", "alert('提示: 项目开始日期不是日期格式! ');", true);
                            return;
                        }
                    }
                }
            }

            // project
            if (this.TextBox3.Text.Trim() != "")
            {
                m_Where += (m_Where == "" ? "" : " and ") + " projectName like '%" + this.TextBox3.Text.Trim() + "%' ";
            }


            //
            //// Select
            //
            P_ht.H_data P_data = new P_ht.H_data();
            P_data.sql_text1 = " SELECT [projectName], [WorkName], [PlanEndDate], [PlanStartDate] FROM [PJ_WorkPiece] where " + m_Where + " ";
            Str_sql = P_data.sql_text1;
            P_data.select_tables();
            DataSet1 = P_data.DataSet8;
            Session["r1_PJ_WorkPiece"] = this.DataSet1;

            this.GridView1.DataSource = DataSet1;
            this.GridView1.DataBind();

        }


        protected void GridView1_PageIndexChanging(object sender, GridViewPageEventArgs e)
        {
            GridView1.PageIndex = e.NewPageIndex;
            this.DataSet2 = new System.Data.DataSet();
            this.DataSet2 = (DataSet)Session["r1_PJ_WorkPiece"];
            this.GridView1.DataSource = this.DataSet2;
            this.GridView1.DataBind();
        }


        protected void GridView1_RowDataBound(object sender, GridViewRowEventArgs e)
        {
            int i;
            //执行循环,保证每条数据都可以更新
            for (i = -1; i < GridView1.Rows.Count; i++)
            {
                //首先判断是否是数据行
                if (e.Row.RowType == DataControlRowType.DataRow)
                {
                    //当鼠标停留时更改背景色
                    e.Row.Attributes.Add("onmouseover", "c=this.style.backgroundColor;this.style.backgroundColor='#bcbf56'");
                    //当鼠标移开时还原背景色
                    e.Row.Attributes.Add("onmouseout", "this.style.backgroundColor=c");
                }
            }
        }

        protected void btn_export_Click(object sender, EventArgs e)
        {
            HttpContext.Current.Response.Clear();
            HttpContext.Current.Response.Charset = "";
            HttpContext.Current.Response.ContentType = "application/vnd.ms-xls";
            StringWriter stringWrite = new StringWriter();
            HtmlTextWriter htmlWrite = new HtmlTextWriter(stringWrite);

            DataGrid dg = new DataGrid();

            //dg.DataSource = ds;
            this.DataSet2 = new System.Data.DataSet();
            this.DataSet2 = (DataSet)Session["r1_PJ_WorkPiece"];
            dg.DataSource = DataSet2;

            dg.DataBind();
            dg.RenderControl(htmlWrite);
            //HttpContext.Current.Response.AddHeader("content-disposition", "attachment;filename="+HttpUtility.UrlEncode(excelName))
            HttpContext.Current.Response.AddHeader("content-disposition", "attachment;filename="+HttpUtility.UrlEncode("2015.xls"));
        HttpContext.Current.Response.Write(stringWrite.ToString());
            HttpContext.Current.Response.End();
        }


    }

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  • 原文地址:https://www.cnblogs.com/hutie1980/p/4663370.html
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