if (mResult.GetLength(1) == 3)

...{
AutoCompleteStringCollection asc = new AutoCompleteStringCollection();
for (int i = 0; i < mResult.GetLength(0); i++)

...{
itemEx item1 = new itemEx(mResult[i, 0].oContent.ToString(), mResult[i, 0].oContent.ToString() + mResult[i, 1].oContent.ToString());
this.CmbPlayerItem.Items.Add(item1);
ssd.Add( mResult[i, 1].oContent.ToString()+mResult[i, 0].oContent.ToString(), mResult[i, 0].oContent.ToString());
//strAutoComplate = strAutoComplate + mResult[i, 0].oContent.ToString() + mResult[i, 1].oContent.ToString() + " ";
asc.Add(mResult[i, 1].oContent.ToString() + mResult[i, 0].oContent.ToString());
}
this.CmbPlayerItem.AutoCompleteMode = AutoCompleteMode.SuggestAppend;
this.CmbPlayerItem.AutoCompleteSource = AutoCompleteSource.CustomSource;
this.CmbPlayerItem.AutoCompleteCustomSource = asc;

this.CmbPlayerItem.SelectedIndex = 0;
}
else

...{
MessageBox.Show("没有道具列表");
}
通过使用AutoCompleteMode属性增强功能