SelMaterialSort.aspx.cs

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using System;
using System.Data;
using System.Configuration;
using System.Collections;
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;

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

    private string SearchStr
    {
        get
        {
            object o = ViewState["SearchStr"];
            return o == null ? string.Empty : o.ToString();
        }
        set { ViewState["SearchStr"] = value; }
    }


    UserInfo userinfo = new UserInfo();
    protected void Page_Load(object sender, EventArgs e)
    {
        if (!IsPostBack)
        {
            userinfo.ChkUserInfo();

            this.SearchStr = "";
            GvBindData();
        }

    }

    protected void GvBindData()
    {

        DataSet ds = new swei.MaterialManage().GetMaterialSortData(2, 0, this.SearchStr);

        this.GridView1.DataSource = ds.Tables[0].DefaultView;
        this.GridView1.DataBind();

    }

 

    protected void QueryBtn_Click(object sender, EventArgs e)
    {
        string MaterialSortName = this.MaterialSortNameTxt.Text.Trim();
        string IfRegulate = this.IfRegulateDDL.SelectedValue;

        if (IfRegulate == null || IfRegulate == "")
        { this.SearchStr = "where   MaterialSortName  like '%" + MaterialSortName + "%'"; }
        else