组合框在运行时不起作用 [英] Combo box is not working at runtime

问题描述

Hello All，

Hello All,

推荐答案

  ;  您必须使用this.comboBox3.DataSource = ds.Tables [0] .DefaultView;以下是总代码...

   You had to use this.comboBox3.DataSource = ds.Tables[0].DefaultView; Here is the total code...

 

            string connectionString = @"Data Source=.\SQLEXPRESS;Initial Catalog=CurrencyDetails;userid=sa;password=C0llecti0n;Pooling=False";
            SqlConnection con = new SqlConnection(connectionString);
            con.Open();
            string sqlStr = "select CurrencyType from tblCurrency;";
            SqlDataAdapter adapter = new SqlDataAdapter(sqlStr, con);
            DataSet ds = new DataSet();
            adapter.TableMappings.Add("Table", "tblCurrency");
            adapter.Fill(ds);

            this.comboBox3.DataSource = ds.Tables[0].DefaultView;
            this.comboBox3.DisplayMember = "CurrencyType";
            this.comboBox3.ValueMember = "CurrencyType";
            con.Close();
            adapter.Dispose();

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