有关子窗体

Question

大家好！
    我现在有这样个问题，我在A页打开一个有返回值的子窗体B页以后，我执行代码的上传功能时，它又弹出一个B窗体，这是怎么回事，该怎样去解决？

Answer 1

在A页有个按扭点击事件：onclick="javascript:Composition.focus();var arr = showModalDialog('insertpic.aspx','', 'dialogWidth:280px; dialogHeight:300px; status:0;help:0');if (ar!=''){ FTB_InsertBR(this,'FreeTextBox1','<img src=\'imgs\\'+arr+'\'>');}"B页：public partial class insertpic : System.Web.UI.Page
{
    int CoId = 10;
  
    protected void upload_Click(object sender, EventArgs e)
    {
        string mpath = Server.MapPath(@"imgs/");
        if (UploadFileName.FileName.Length == 0)
        {        }
        else
        { 
            try
            {
                if (Directory.Exists(mpath) == false) //若该目录不存在，创建该目录
                {
                    Directory.CreateDirectory(mpath);
                }
                string strtime = System.DateTime.Now.Year.ToString() + System.DateTime.Now.Month.ToString() + System.DateTime.Now.Day.ToString() + System.DateTime.Now.Hour.ToString() + System.DateTime.Now.Minute.ToString() + System.DateTime.Now.Second.ToString();
                string filename = "CoId" + CoId + "popad" + strtime + "." + UploadFileName.PostedFile.FileName.Substring(UploadFileName.PostedFile.FileName.LastIndexOf(".") + 1);
                UploadFileName.PostedFile.SaveAs(mpath + filename);
                upfilename.Text = filename.ToString();
            }
            catch(Exception ex)
            {
                Response.Write(ex);
            }
        }
    }
   
}