selectedindexchanged

C#将Dictionary,StringDictionary等集合数据绑定到如comboB。。。

⼀般在使⽤C#提供的如combobx控件绑定数据源时都是直接绑定数据库⾥的数据的（DataTable,DataSet等）

最近在⼀个项⽬⾥需要使⽤combobox绑定类似“状态的”数据源,该字段⾥的数据最不可变，所以不需要从数据库⾥获取数据

由于字段只需要健值没有其他信息所以使⽤Dictionary是最合适不过了,但如何将集合⾥的数据绑定并再获取集合⾥的健值呢？

在google搜索⼀番并找到解决⽅案：

narydict=nary();

("","百度");

("","⾕歌");

("","腾讯");

//绑定数据

urce=newBindingSource(dict,null);

ember="Key";//⽂本对应的值

yMember="Value";//显⽰的⽂本

//绑定选择事件

edIndexChanged+=newEventHandler(comboBox1_SelectedIndexChanged);

//专门存储字符串健值的集合类

//健值都是string类型

Dictionarysd=Dictionary();

("","淘宝");

("","天猫");

("","京东");

urce=newBindingSource(sd,null);

ember="Key";

yMember="Value";

edIndexChanged+=newEventHandler(comboBox2_SelectedIndexChanged);

完整代码：

/******************************************************************

*创建⼈：黄愿

*创建时间：2014-9-911:34:39

*说明：C#将Dictionary,StringDictionary等集合数据绑定到如comboBox等控件数据源中

*Email：huangyuan413026@

*******************************************************************/

usingSystem;

;

namespaceHTL

{

publicpartialclassBindDictionaryToDatasource:Form

{

publicBindDictionaryToDatasource()

{

InitializeComponent();

}

privatevoidBindDictionaryToDatasource_Load(objectsender,EventArgse)

{

narydict=nary();

("","百度");

("","⾕歌");

("","腾讯");

//绑定数据

urce=newBindingSource(dict,null);

ember="Key";//⽂本对应的值

yMember="Value";//显⽰的⽂本

//绑定选择事件

edIndexChanged+=newEventHandler(comboBox1_SelectedIndexChanged);

//专门存储字符串健值的集合类

//健值都是string类型

Dictionarysd=Dictionary();

("","淘宝");

("","天猫");

("","京东");

urce=newBindingSource(sd,null);

ember="Key";

yMember="Value";

edIndexChanged+=newEventHandler(comboBox2_SelectedIndexChanged);

}

privatevoidcomboBox1_SelectedIndexChanged(objectsender,EventArgse)

{

("comboBox1信息如下:rn索引:"+edIndex+",值SelectedValue:"+edValue+",⽂本Text:"++",SelectedItem:"+ng());

}

privatevoidcomboBox2_SelectedIndexChanged(objectsender,EventArgse)

{

("comboBox2信息如下:rn索引:"+edIndex+",值SelectedValue:"+edValue+",⽂本Text:"++",SelectedItem:"+ng());

}

}

}

ViewCode

设计代码：

namespaceHTL

{

partialclassBindDictionaryToDatasource

{

///

///Requireddesignervariable.

///

inercomponents=null;

///

///Cleanupanyresourcesbeingused.

///

///trueifmanagedresourcesshouldbedisposed;otherwise,false.

protectedoverridevoidDispose(booldisposing)

{

if(disposing&&(components!=null))

{

e();

}

e(disposing);

}

#regionWindowsFormDesignergeneratedcode

///

///RequiredmethodforDesignersupport-donotmodify

///thecontentsofthismethodwiththecodeeditor.

///

privatevoidInitializeComponent()

{

ox1=ox();

ox2=ox();

dLayout();

//

//comboBox1

//

tingEnabled=true;

on=(107,69);

="comboBox1";

=(121,20);

ex=0;

//

//comboBox2

//

tingEnabled=true;

on=(107,127);

="comboBox2";

=(121,20);

ex=1;

//

//BindDictionaryToDatasource

//

aleDimensions=(6F,12F);

aleMode=;

Size=(292,273);

(ox2);

(ox1);

="BindDictionaryToDatasource";

="BindDictionaryToDatasource";

+=andler(ctionaryToDatasource_Load);

Layout(false);

}

#endregion

oxcomboBox1;

oxcomboBox2;

}

}

ViewCode

参考：