【问题】
C#中已经有了一个ComboBox和一个特定的结构体数组：
private struct keyValueList
{
public string Key{get;set;} // key
public List<string> ValueStrList{get;set;} // the string value list for the key
}
List<keyValueList> gFootprintTypeSelList; // footprint type
private void initFootprintTypeAndFootprintString()
{
gFootprintTypeSelList = new List<keyValueList>();
//1. option1: Guest Blogging
keyValueList keyValueListGuestBlogging = new keyValueList();
keyValueListGuestBlogging.Key = "Guest Blogging";
keyValueListGuestBlogging.ValueStrList = new List<string>();
//keyValueListGuestBlogging.ValueStrList.Add("Specify Footprint");
keyValueListGuestBlogging.ValueStrList.Add("Guest Blogging");
keyValueListGuestBlogging.ValueStrList.Add("Contribute");
keyValueListGuestBlogging.ValueStrList.Add("Write for us");
keyValueListGuestBlogging.ValueStrList.Add("Guest Category");
keyValueListGuestBlogging.ValueStrList.Add("Submit Content");
gFootprintTypeSelList.Add(keyValueListGuestBlogging);
//2. option2: Blog Commenting
keyValueList keyValueListBlogCommenting = new keyValueList();
keyValueListBlogCommenting.Key = "Blog Commenting";
keyValueListBlogCommenting.ValueStrList = new List<string>();
keyValueListBlogCommenting.ValueStrList.Add("KeywordLuv Blogs");
keyValueListBlogCommenting.ValueStrList.Add("Joomla JComments Plugin");
keyValueListBlogCommenting.ValueStrList.Add("Yootheme Zoo Blog App");
keyValueListBlogCommenting.ValueStrList.Add("CommentLuv Premium Blogs");
keyValueListBlogCommenting.ValueStrList.Add("Anchor Text In Comment Blogs");
keyValueListBlogCommenting.ValueStrList.Add("Do Follow Comment Blogs");
keyValueListBlogCommenting.ValueStrList.Add("Create your own .GOV WordPress site");
keyValueListBlogCommenting.ValueStrList.Add("Create your own .EDU WordPress site");
keyValueListBlogCommenting.ValueStrList.Add("Find .edu Blogs");
keyValueListBlogCommenting.ValueStrList.Add("Find .gov Blogs");
gFootprintTypeSelList.Add(keyValueListBlogCommenting);
//3. option3: Message Boards and Forums
keyValueList keyValueListMessageBoardsAndForums = new keyValueList();
keyValueListMessageBoardsAndForums.Key = "Message Boards and Forums";
keyValueListMessageBoardsAndForums.ValueStrList = new List<string>();
keyValueListMessageBoardsAndForums.ValueStrList.Add("PHPbb");
keyValueListMessageBoardsAndForums.ValueStrList.Add("vBulletin");
keyValueListMessageBoardsAndForums.ValueStrList.Add("SMF");
keyValueListMessageBoardsAndForums.ValueStrList.Add("Simple Machines");
keyValueListMessageBoardsAndForums.ValueStrList.Add("punBB");
keyValueListMessageBoardsAndForums.ValueStrList.Add("Expression Engine");
keyValueListMessageBoardsAndForums.ValueStrList.Add("Blog Engine");
gFootprintTypeSelList.Add(keyValueListMessageBoardsAndForums);
//4. option4: Advanced Search Parameters
keyValueList keyValueListAdvancedSearchParameters = new keyValueList();
keyValueListAdvancedSearchParameters.Key = "Advanced Search Parameters";
keyValueListAdvancedSearchParameters.ValueStrList = new List<string>();
keyValueListAdvancedSearchParameters.ValueStrList.Add("URLs Containing Keyword");
keyValueListAdvancedSearchParameters.ValueStrList.Add("Page Titles Containing Keyword");
keyValueListAdvancedSearchParameters.ValueStrList.Add("Search Anchor Text");
keyValueListAdvancedSearchParameters.ValueStrList.Add("Related (enter a domain)");
gFootprintTypeSelList.Add(keyValueListAdvancedSearchParameters);
//5. option5: Sponsor/Donate
keyValueList keyValueListSponsorDonate = new keyValueList();
keyValueListSponsorDonate.Key = "Sponsor/Donate";
keyValueListSponsorDonate.ValueStrList = new List<string>();
keyValueListSponsorDonate.ValueStrList.Add("Sponsor");
keyValueListSponsorDonate.ValueStrList.Add("Sponsorship");
keyValueListSponsorDonate.ValueStrList.Add("Benefactors");
keyValueListSponsorDonate.ValueStrList.Add("Sponsor Charity");
keyValueListSponsorDonate.ValueStrList.Add("Donate");
keyValueListSponsorDonate.ValueStrList.Add("Donations");
keyValueListSponsorDonate.ValueStrList.Add("Donors");
gFootprintTypeSelList.Add(keyValueListSponsorDonate);
//6. option6: Wiki / Media Wiki Pages
keyValueList keyValueListWikiMediaWikiPages = new keyValueList();
keyValueListWikiMediaWikiPages.Key = "Wiki / Media Wiki Pages";
keyValueListWikiMediaWikiPages.ValueStrList = new List<string>();
keyValueListWikiMediaWikiPages.ValueStrList.Add("Wiki sites");
keyValueListWikiMediaWikiPages.ValueStrList.Add("Outdated Wiki Content");
gFootprintTypeSelList.Add(keyValueListWikiMediaWikiPages);
//7. option7: Other Queries
keyValueList keyValueListOtherQueries = new keyValueList();
keyValueListOtherQueries.Key = "Other Queries";
keyValueListOtherQueries.ValueStrList = new List<string>();
keyValueListOtherQueries.ValueStrList.Add("Directory Add URL");
keyValueListOtherQueries.ValueStrList.Add("Directory Site");
keyValueListOtherQueries.ValueStrList.Add("Hubpages - Hot Hubs");
keyValueListOtherQueries.ValueStrList.Add("Squidoo lenses - Add To List");
keyValueListOtherQueries.ValueStrList.Add("Social Bookmarking");
keyValueListOtherQueries.ValueStrList.Add("Social Bookmarking 2.0");
keyValueListOtherQueries.ValueStrList.Add("Guestbooks");
keyValueListOtherQueries.ValueStrList.Add("Suggest or Submit URL");
keyValueListOtherQueries.ValueStrList.Add("Warp Framework (Joomla)");
keyValueListOtherQueries.ValueStrList.Add("Angelae8654 Site Profiles");
gFootprintTypeSelList.Add(keyValueListOtherQueries);
//8. option8: Link Bartering
keyValueList keyValueListLinkBartering = new keyValueList();
keyValueListLinkBartering.Key = "Link Bartering";
keyValueListLinkBartering.ValueStrList = new List<string>();
keyValueListLinkBartering.ValueStrList.Add("Buy Blog Posts");
keyValueListLinkBartering.ValueStrList.Add("Buy Link");
keyValueListLinkBartering.ValueStrList.Add("Link Exchange");
keyValueListLinkBartering.ValueStrList.Add("Link Barter Service");
gFootprintTypeSelList.Add(keyValueListLinkBartering);
//9. option9: Site Specific Sites
keyValueList keyValueListSiteSpecificSites = new keyValueList();
keyValueListSiteSpecificSites.Key = "Site Specific Sites";
keyValueListSiteSpecificSites.ValueStrList = new List<string>();
keyValueListSiteSpecificSites.ValueStrList.Add("Facebook");
keyValueListSiteSpecificSites.ValueStrList.Add("Twitter");
keyValueListSiteSpecificSites.ValueStrList.Add("Pinterest");
keyValueListSiteSpecificSites.ValueStrList.Add("Google Groups");
keyValueListSiteSpecificSites.ValueStrList.Add("Scribd");
keyValueListSiteSpecificSites.ValueStrList.Add("Slideshare");
keyValueListSiteSpecificSites.ValueStrList.Add("Wikipedia");
keyValueListSiteSpecificSites.ValueStrList.Add("Tumblr");
keyValueListSiteSpecificSites.ValueStrList.Add("Typepad");
keyValueListSiteSpecificSites.ValueStrList.Add("Buzzfeed");
keyValueListSiteSpecificSites.ValueStrList.Add("NYTimes");
keyValueListSiteSpecificSites.ValueStrList.Add("Huffington Post");
gFootprintTypeSelList.Add(keyValueListSiteSpecificSites);
}现在希望把此结构体数组gFootprintTypeSelList，当做ComboBox变量cmbFootprintType的数据源。
希望实现下拉菜单中，可以显示对应的名字。以及获得对应选中项的值，是其中的List<string>的ValueStrList。
【解决过程】
1.参考了之前的自己的：
和
去写代码：
cmbFootprintType.DataSource = gFootprintTypeSelList; cmbFootprintType.DisplayMember = "key";
就可以正常显示所要的结果了：
【总结】
动态的给ComboBox绑定数据源：
1.设置结构体，其中的field的名字首字母大写，支持get和set；
2.创建对应的结构体数组
3.把结构体数组赋值给ComboBox的DataSource，把DisplayMember设置为对应的结构体的field的名字（全小写）
即可。
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