Web服務的調用

1.創建服務引用

例如：天氣預報

2.在代碼添加引用空間

1   TvProgram.ChinaTVprogramWebService tp = new TvProgram.ChinaTVprogramWebService();
2         DataSet ds=    tp.getAreaDataSet();

 3.引用具體方法

 1  private void comboBox1_SelectedIndexChanged(object sender, EventArgs e)
 2         {
 3             ComboBox cb = (ComboBox)sender;
 4             if(comboBox1.SelectedIndex>0)
 5             { 
 6            
 7              int num= Convert.ToInt32(cb.SelectedValue.ToString());
 8 
 9              TvProgram.ChinaTVprogramWebService tp = new TvProgram.ChinaTVprogramWebService();
10              DataSet ds = tp.getTVstationDataSet(num);
11              comboBox2.DataSource = ds.Tables[0];
12              comboBox2.DisplayMember = "tvStationName";
13              comboBox2.ValueMember = "tvStationID";
14            
15             }
16         }

返回的xml用兩種處理方法

  //DataRow[] dt = ds.Tables[0].Select();   
       //for (int i = 3; i < dt.Length; i++)
       //{
       //    Text = dt[i]["Area"].ToString();
       //   Value = Convert.ToInt32(dt[i]["areaID"].ToString());
        //    comboBox1.Items.Add(Text);
       //}
       

 comboBox1.DataSource = ds.Tables[0];
        comboBox1.DisplayMember = "Area";
        comboBox1.ValueMember = "areaID";