?-------- 調用存儲過程，連接控件參數，顯示數據

??????? SqlConnection conn = new SqlConnection();

??????? conn.ConnectionString = "Data Source=.;Database=qdxt;Integrated Security=SSPI";

??????? conn.Open();

??????? SqlCommand comm = new SqlCommand();

??????? comm.Connection = conn;

??????? comm.CommandType = CommandType.StoredProcedure;

??????? comm.CommandText = "proc_shiyanshishiyongliang";

??????? SqlParameter pa = new SqlParameter("@sh_sh_id", SqlDbType.Char);

??????? pa.Value = DropDownList1.SelectedItem.ToString();

??????? comm.Parameters.Add(pa);

??????? comm.Parameters.Add("@shiyongliang", SqlDbType.Int).Direction = ParameterDirection.Output;

??????? comm.ExecuteScalar();

??????? int i = (int)comm.Parameters["@shiyongliang"].Value;

??????? TextBox1.Text = i.ToString();

??????? ------ 代碼連接數據庫查詢結果

string y_name = TextBox1.Text;

??????? string y_mima = TextBox2.Text;

??????? string y_leixing=DropDownList1.Text;

??????? SqlConnection conn = new SqlConnection();

??????? conn.ConnectionString = "data source=.;database=qdxt;Integrated Security=SSPI";

??????? conn.Open();

??????? SqlCommand com = new SqlCommand();

??????? com.Connection = conn;

??????? com.CommandText = "select * from yh where y_name=@y_name and y_mima=@y_mima and y_leixing=@y_leixing";

??????? SqlParameter pa = new SqlParameter("@y_name", SqlDbType.VarChar,10);

??????? pa.Value = y_name;

??????? com.Parameters.Add(pa);

??????? pa = new SqlParameter("@y_mima", SqlDbType.VarChar, 10);

??????? pa.Value = y_mima;

??????? com.Parameters.Add(pa);

??????? pa = new SqlParameter("@y_leixing", SqlDbType.VarChar,10);

??????? pa.Value = y_leixing;

??????? com.Parameters.Add(pa);

??????? SqlDataReader re = com.ExecuteReader();

??????? if (re.Read())

??????????? if (y_leixing == "guanliyuan")

??????????? Response.Redirect("kcanpai.aspx");

??????????? else

??????????? Response.Redirect("新文件夾1/chuqinchaxun.aspx");

??????? else

??????????? Response.Write("<script language='javascript'>alert('密碼或用戶名錯誤');</script>");

??????? -----------代碼連接數據庫增刪改

??????? SqlConnection conn = new SqlConnection();

??????? conn.ConnectionString = "data source=.;database=qdxt;Integrated Security=SSPI";

??????? conn.Open();

??????? SqlCommand com = new SqlCommand();

??????? com.Connection = conn;

??????? com.CommandText = "insert into dbo.kc(kc_id,kc_name) values(@kc_id,@kc_name)";

??????? SqlParameter pa = new SqlParameter("@kc_id", SqlDbType.NChar, 10);

??????? pa.Value = TextBox1.Text;

??????? com.Parameters.Add(pa);

??????? pa = new SqlParameter("@kc_name", SqlDbType.VarChar, 10);

??????? pa.Value = TextBox2.Text;

??????? com.Parameters.Add(pa);

??????? int i = com.ExecuteNonQuery();

??????? if (i != 0)

??????? {

??????????? Response.Write("<script language='javascript'>alert('添加數據成功');</script>");

??????? }

??????? else

??????? {

??????????? Response.Write("<script language='javascript'>alert('添加數據失敗');</script>");

??????? }

??????? Response.Redirect("kcshezhi.aspx");

轉載于:https://www.cnblogs.com/miaofawei/articles/2162347.html

《新程序員》：云原生和全面數字化實踐50位技術專家共同創作，文字、視頻、音頻交互閱讀

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