C＃.net中组合框的默认值 [英] Default value for combobox in C#.net

问题描述

如何在组合框中设置默认值。



问候

Balamurugan

Hi,
How to set a default value in combobox.

Regards
Balamurugan

推荐答案

要设置所选的默认项，只需使用（例如）：

To set the default item that is selected, just use (for example):

myComboBox.SelectedIndex = 5;        // set the 6th item in list as selected

public void FillCmbo(String Sql, ComboBox cmb, String name, String id)
       {
           try
           {
               if (Con.State == ConnectionState.Open)
                   Con.Close();
               Con.Open();

               OleDbDataAdapter Ada = new OleDbDataAdapter(Sql, Con);
               DataTable Dte = new DataTable();
               Ada.Fill(Dte);
               DataRow Drw;
               Drw = Dte.NewRow();
               Drw.ItemArray = new object[] { 0, "<----Select---->" };
               Dte.Rows.InsertAt(Drw, 0);
               cmb.DisplayMember =name;
               cmb.ValueMember = id;
               cmb.DataSource = Dte;
           }
           catch (System.Exception ex)
           {

               MessageBox.Show(ex.Message, "Check", MessageBoxButtons.OK, MessageBoxIcon.Information);
           }
       }

/ ............ ....你也可以使用

ComboBox.selectIndex = 0;

/................you can also use
ComboBox.selectIndex=0;

请参考这些链接：

1） http://social.msdn.microsoft.com/forums / en-US / winforms / thread / 1bbfc2b0-f099-4572-be70-e70a27ec2eed / [ ^ ]

2） http://stackoverflow.com/questions/7309164/setting-combobox-default-value-using-selectedindex [<一个href =http://stackoverflow.com/questions/7309164/setting-combobox-default-value-using-selectedindex\"target =_ blanktitle =New Window> ^ ]

Please refer these links:
1) http://social.msdn.microsoft.com/forums/en-US/winforms/thread/1bbfc2b0-f099-4572-be70-e70a27ec2eed/[^]
2) http://stackoverflow.com/questions/7309164/setting-combobox-default-value-using-selectedindex[^]

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