Lyb/Add.aspx.cs

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using System;
using System.Collections;
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;

public partial class Lyb_Add : System.Web.UI.Page
{
    protected void Page_Load(object sender, EventArgs e)
    {
        Image1.ImageUrl = "image/" + DropDownList1.SelectedValue.ToString() + ".jpg";
    }
    protected void Button1_Click(object sender, EventArgs e)
    {
        string strContent = Server.HtmlEncode(txtContent.Text);
        strContent = strContent.Replace("\r\n", "<br>");
        strContent = strContent.Replace("'", "''");
        strContent = strContent.Replace(" ", "&nbsp;");

        string strAuthor = Server.HtmlEncode(txtName.Text);
        strAuthor = strAuthor.Replace("\r\n", "<br>");
        strAuthor = strAuthor.Replace("'", "''");
        strAuthor = strAuthor.Replace(" ", "&nbsp;");

        string strSQL = "insert into lyb(LyAuthor,LyContent,AuthorPhoto) values('" + strAuthor + "','" + strContent + "','" + DropDownList1.SelectedValue.ToString() + ".jpg')";
        if (MyClass.ExecuteSql(strSQL) > 0)
        {
            Response.Write("<script>alert('留言成功！')</script>");
            Response.Write("<script>location.assign('show.aspx')</script>");
        }
        else
        {
            Response.Write("<script>alert('留言失败！')</script>");
        }
    }
}