C＃中的下拉列表无法显示.text

问题描述

大家好，全部，



我有2个下拉列表



combobox1和combobox2



当我在combobox1中选择一些东西时我想在我的代码中用combobox2显示一个数字。

Hi, all,

I have 2 dropdown list

combobox1 and combobox2

when I will choose something in combobox1 I want to show a number in combobox2 this what I did in my code.

private void cmbCaptureMethod_SelectedIndexChanged(object sender, EventArgs e)
      {
          ComboBox senderComboBox = (ComboBox)sender;

          if (senderComboBox.SelectedIndex > 0)
          {
              if (this.Institution_number == "00000004" && this.Card_type == "Visa Card")
              {
                  string capturemethodtoeci = cmbCaptureMethod.SelectedValue.ToString();

                  switch (capturemethodtoeci)
                  {
                      case "030":
                          this.eciindicator = 1;
                          break;
                      case "045":
                          this.eciindicator = 2;
                          break;
                      case "050":
                          this.eciindicator = 5;
                          break;
                      case "051":
                          this.eciindicator = 6;
                          break;
                      case "053":
                          this.eciindicator = 8;
                          break;
                      case "054":
                          this.eciindicator = 7;
                          break;
                      case "121":
                          this.eciindicator = 0;
                          break;
                      default:
                          break;
                  }
                  cmbEciIndicator.Text = this.eciindicator.ToString();
              }
          }
      }

我尝试过：



当它不是下拉列表时一切正常但现在eciindicator没有显示。有谁可以帮助我吗？



我尝试了几种方法，例如：



cmbeciindicator.items.insertat（0，this.eciindicator .toString（））;

cmbeciindicator.text = this.eciindicator.toString（）;

What I have tried:

when it was not dropdownlist everything works perfectly but now the eciindicator is not showing. Can someone help me please?

I have tried several methods like :

cmbeciindicator.items.insertat(0,this.eciindicator.toString());
cmbeciindicator.text = this.eciindicator.toString();

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