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我目前正在使用gridview將論壇項目附加到數據庫。使用SelectedIndexChanged
,它將重定向到另一頁面以顯示標籤中的詳細信息。但是,我無法顯示&沒有任何特定的錯誤。無法從數據庫檢索數據並將其存儲到值
這是我的代碼:
using System;
using System.Collections.Generic;
using System.Configuration;
using System.Data;
using System.Data.SqlClient;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
public partial class FAQViewPost : System.Web.UI.Page
{
string _connStr = ConfigurationManager.ConnectionStrings["WingsDrinksDbContext"].ConnectionString;
FAQ faq = null;
string CustQuestionCategory = null;
string CustQuestion = null;
protected void Page_Load(object sender, EventArgs e)
{
string FAQID = Request.QueryString["FAQID"].ToString();
Load(FAQID);
}
protected void Load(string FAQID)
{
DataTable dt = new DataTable();
string queryStr = "SELECT * FROM [FAQ] WHERE FAQID = @FAQID ";
SqlConnection conn = new SqlConnection(_connStr);
SqlCommand cmd = new SqlCommand();
string[] arr = { queryStr };
string allQueries = string.Join(";", arr);
cmd.CommandText = allQueries;
cmd.Connection = conn;
cmd.Parameters.AddWithValue("@FAQID", FAQID);
SqlDataAdapter sqlDa = new SqlDataAdapter(cmd);
sqlDa.Fill(dt);
if (dt.Rows.Count > 0)
{
lbl_category.Text = dt.Rows[0]["CustQuestionCategory"].ToString();
lbl_question.Text = dt.Rows[0]["CustQuestion"].ToString();
}
conn.Close();
conn.Dispose();
}
}
您是否調試過代碼?您在FAQID中獲得價值嗎?你能分享selectedIndexChanged事件的代碼嗎?是網格視圖的事件嗎?你在數據表中獲取行嗎? –