找不到路徑的一部分。使用上傳按鈕更新sql

如果我選擇照片或圖像與FileUpload控制..記錄更新過程將成功，但如果FileUpload控件沒有文件選擇上述錯誤出現，要記住路徑是正確的，存在和FileUpload Control保存圖片沒有任何問題。找不到路徑的一部分。使用上傳按鈕更新sql

protected SqlCommand News_command; 
protected SqlDataAdapter News_adp; 
protected System.Data.DataTable News_tbl; 
protected SqlConnection _connection; 
protected string _ID; 

protected void Page_Load(object sender, EventArgs e) 
{ 

    if ((Request.QueryString["ID"] != null)) 
    { 
     _ID = Request.QueryString["ID"].ToString(); 
    } 

    prepareConnection(); 
    News_command.CommandText = "select * from News where [email protected]"; 
    News_command.Parameters.AddWithValue("ID", _ID); 
    News_adp = new SqlDataAdapter(); 
    News_tbl = new System.Data.DataTable(); 
    News_adp.SelectCommand = News_command; 
    News_adp.Fill(News_tbl); 


    if (News_tbl.Rows.Count > 0) 
    { 
     lblID.Text = News_tbl.Rows[0]["ID"].ToString(); 
     titleTextBox.Text = News_tbl.Rows[0]["Title"].ToString(); 
     CKEditor1.Text = News_tbl.Rows[0]["Contect"].ToString(); 
     imgArticle.ImageUrl = News_tbl.Rows[0]["img"].ToString(); 
     lblDate.Text = News_tbl.Rows[0]["Date"].ToString(); 
    } 
} 

protected void prepareConnection() 
{ 
    _connection = new SqlConnection(@"Data Source=Abu-Adam\localhost;Initial Catalog=BrainStorms;User ID=sa;Password=ameer123"); 
    _connection.Open(); 
    News_command = new SqlCommand(); 
    News_command.Connection = _connection; 
} 
protected void Button1_Click(object sender, EventArgs e) 
{ 
    if (FileUpload1.PostedFile == null) 
    { 
     prepareConnection(); 
     News_command.CommandText = "UPDATE News SET Title=" + "N'" + titleTextBox.Text + "'" + "," + "Contect=" + "N'" + CKEditor1.Text + "'" + " WHERE ID='" + Convert.ToInt16(lblID.Text) + "';"; 
     News_command.ExecuteNonQuery(); 

    } 

    else if (FileUpload1.PostedFile != null) 
    { 
     prepareConnection(); 
     string FileName = Path.GetFileName(FileUpload1.PostedFile.FileName); 
     //save file to disk 

     FileUpload1.SaveAs(Server.MapPath("~/ArticleImages/News/" + FileName)); 
     News_command.CommandText = "UPDATE News SET Title=" + "N'" + titleTextBox.Text + "'" + "," + "Contect=" + "N'" + CKEditor1.Text + "'" + ",[email protected] WHERE ID='" + Convert.ToInt16(lblID.Text) + "';"; 
     News_command.Parameters.AddWithValue("FilePath", "~/ArticleImages/News/" + FileName); 
     try 
     { 
      News_command.ExecuteNonQuery(); 


     } 
     catch (Exception ex) 
     { 
      Response.Write(ex.Message); 
     } 

    } 
    else 
    { 
     try 
     { 
      News_command.ExecuteNonQuery(); 
     } 
     catch (Exception ex) 
     { 
      Response.Write(ex.Message); 
     } 
    } 
}

哪裏是我的代碼錯了??請提出任何建議？

關於 Ameer。

來源

2013-10-06 Ameer A. Lawi

我解決了它更換，如果（FileUpload1.PostedFile！= NULL）與IF（FileUpload1.HasFile） –

因爲根據您的代碼Fileupload永遠不會爲空。嘗試驗證代碼：

if(fileUpload.HasFile && fileUpload.PostedFile.ContentLength>0) // check for 
                   validity of file 
{ 
    var path = string.Format("~/YourImageDir/{0}",Guid.NewGuid().ToString(). 
    Replace("-",string.Empty));  
    //then do your update with this above path 
} 
else 
{ 
// update without file path 
}

來源

2013-10-06 06:35:06

感謝ü阿米特。這可能會在不久的將來幫助=] –

找不到路徑的一部分。使用上傳按鈕更新sql

回答

相關問題