EditFilesInfo.aspx.cs

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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.IO;

using System.Data.SqlClient;
public partial class EditFilesInfo : System.Web.UI.Page
{
    SqlHelper data = new SqlHelper();
    protected void Page_Load(object sender, EventArgs e)
    {
        if (!IsPostBack)
        {
            DropDownList1.DataSource = data.GetDataReader("select * from FilesType");
            DropDownList1.DataValueField = "id";
            DropDownList1.DataTextField = "name";
            DropDownList1.DataBind();
            string sqlstr = "select  *  from dbo.FilesType order by id desc";

            DataList1.DataSource = data.GetDataReader(sqlstr);
            DataList1.DataBind();

            Get_Article();


            DropDownList2.DataSource = data.GetDataReader("select * from MuLu   where UserId='" + Session["UserId"].ToString() + "' ");
            DropDownList2.DataValueField = "id";
            DropDownList2.DataTextField = "FolderAdd";
            DropDownList2.DataBind();
        }
    }
    protected string CutChar(string strChar, int intLength)
    {
        //取得自定义长度的字符串
        if (strChar.Length > intLength)
        { return strChar.Substring(0, intLength); }
        else
        { return strChar; }

    }
    private void Get_Article()
    {
        int id = int.Parse(Request.QueryString["id"].ToString());
        SqlDataReader dr = data.GetDataReader("select * from FilesInfo where id=" + id);
        dr.Read();
        TextBox1.Text = dr["TitleName"].ToString();
        content1.Value = dr["FileDs"].ToString();

        Label1.Text = dr["PathName"].ToString();
        Hidden1.Value = dr["Files"].ToString();
        
    }
    protected void Button1_Click1(object sender, EventArgs e)
    {