使用数组填充一个列表框? [英] Use an array to populate a listbox?
问题描述
该网站我的工作将包含一个下拉列表,其中显示了一些原因codeS的。
是否有可能来用一个自定义的类派生的数组一个下拉列表?
事情是这样的:
aspx页面
< ASP:DropDownList的ID =ddlReasonsWhy=服务器>< / ASP:DropDownList的>
ASPX code背后
保护无效的Page_Load(对象发件人,EventArgs的发送)
{
//实例化自定义类
1级reasonsList =新1级();
//填充上榜理由
this.ddlReasonsWhy.Items.Add(reasonsList.getReasons);
自定义类
公共字符串[] getReasons()
{
字符串[]的原因;
原因[0] =测试;
原因[1] =test2的;
原因[2] =TEST3; 返回的原因;
}
UPDATE1:的
感谢的答案,这个堆栈<一个href=\"http://stackoverflow.com/questions/132643/adding-listitems-to-a-dropdownlist-from-a-generic-list\">link我的最终解决方案是类似艾哈迈德和柔滑的答案。
类
公开名单&LT;&列表项GT; getRejectReasons()
{
清单&LT;&列表项GT;原因=新的List&LT;&列表项GT;();
reasons.Add(新的ListItem(选择价值,0));
reasons.Add(新的ListItem(红,1));
reasons.Add(新的ListItem(绿,2));
返回的原因; }
code背后
//实例化自定义类
1级拒绝=新1级();
this.ddlReasonsWhy.DataSource = reject.getRejectReasons();
this.ddlReasonsWhy.DataBind();
使用的列表项的代替的字符串和的的AddRange 的作为的添加的
编辑:getReasons是不是一个变量,因此使用getReasons()
ASPXPAGE
&LT; ASP:DropDownList的ID =ddlReasonsWhy=服务器&GT;&LT; / ASP:DropDownList的&GT;
ASPX code背后
保护无效的Page_Load(对象发件人,EventArgs的发送)
{
//实例化自定义类
1级reasonsList =新1级();
//填充上榜理由
this.ddlReasonsWhy.Items.AddRange(reasonsList.getReasons());
}
自定义类
公共列表项[] getReasons()
{
列表项[]的原因;
原因[0] =测试;
原因[1] =test2的;
原因[2] =TEST3; 返回的原因;
}
The website I am working on will contain a drop-down list that shows a number of reason codes.
Is it possible to populate a drop-down list with an array derived from a custom class?
Something like this:
ASPX Page
<asp:DropDownList ID="ddlReasonsWhy" runat="server"></asp:DropDownList>
ASPX Code Behind
protected void Page_Load(object sender, EventArgs e)
{
//instantiate custom class
Class1 reasonsList = new Class1();
//populate reasons list
this.ddlReasonsWhy.Items.Add(reasonsList.getReasons);
Custom Class
public string[] getReasons()
{
string[] Reasons;
Reasons[0] = "test";
Reasons[1] = "test2";
Reasons[2] = "test3";
return Reasons;
}
UPDATE1:
Thanks to the answers and this stack link my final solution is similar to Ahmet and silky answers.
Class
public List<ListItem> getRejectReasons()
{
List<ListItem> reasons = new List<ListItem>();
reasons.Add(new ListItem("Select Value", "0"));
reasons.Add(new ListItem("Red", "1"));
reasons.Add(new ListItem("Green", "2"));
return reasons;
}
Code Behind
//instantiate custom class
Class1 reject = new Class1();
this.ddlReasonsWhy.DataSource = reject.getRejectReasons();
this.ddlReasonsWhy.DataBind();
Use ListItem instead of string and Addrange for Add
edit: getReasons is not a variable so use getReasons()
ASPXPAGE
<asp:DropDownList ID="ddlReasonsWhy" runat="server"></asp:DropDownList>
ASPX Code Behind
protected void Page_Load(object sender, EventArgs e)
{
//instantiate custom class
Class1 reasonsList = new Class1();
//populate reasons list
this.ddlReasonsWhy.Items.AddRange(reasonsList.getReasons());
}
Custom Class
public ListItem[] getReasons()
{
ListItem[] Reasons;
Reasons[0] = "test";
Reasons[1] = "test2";
Reasons[2] = "test3";
return Reasons;
}
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