[英]How do I populate a 'asp:ListBox' with an array of strings?
I have an asp:Listbox
that I need to switch out the items on depending on user selection. 我有一个
asp:Listbox
,我需要根据用户选择来关闭项目。 Here is what I have tried: 这是我尝试过的:
string[] my2012Departments = new string[5];
my2012Departments[0] = "Administration";
my2012Departments[1] = "Imaging Services";
my2012Departments[2] = "IT";
my2012Departments[3] = "Lab";
my2012Departments[4] = "Support Services";
lstDSYDepartment.Items.AddRange(my2012Departments.ToArray());
//The AddRange will also not work without .ToArray()
This however causes the following errors: 但是,这会导致以下错误:
1. Cannot Convert from 'string[]' to 'System.Web.UI.WebControls.ListItem[]' 1.无法从“字符串[]”转换为“ System.Web.UI.WebControls.ListItem []”
2.The best overloaded method match for ....AddRange.... has some invalid arguments 2. .... AddRange ....的最佳重载方法匹配具有一些无效的参数
According to the documentation this should work as long as I put the code in the form load. 根据文档 ,只要我将代码放入表单加载中,这就应该起作用。
You can create a List<string>
and assign that as the datasource for your listbox like below 您可以创建一个
List<string>
并将其分配为列表框的数据源,如下所示
List<string> my2012Departments = new List<string>();
my2012Departments.Add("Administration");
my2012Departments.Add("Imaging Services");
my2012Departments.Add("IT");
my2012Departments.Add("Lab");
my2012Departments.Add("Support Services");
lstDSYDepartment.DataSource = my2012Departments;
lstDSYDepartment.DataBind();
(OR) Instead of assigning a string array; (OR)代替分配字符串数组; create a array of
ListItem[]
like below 创建一个
ListItem[]
数组,如下所示
ListItem[] my2012Departments = new ListItem[5];
my2012Departments[0] = "Administration";
my2012Departments[1] = "Imaging Services";
my2012Departments[2] = "IT";
my2012Departments[3] = "Lab";
my2012Departments[4] = "Support Services";
this.lstDSYDepartment.Items.AddRange(my2012Departments);
The documentation you refer to is for Windows Forms, not for ASP. 您引用的文档适用于Windows窗体,而不适用于ASP。
Try 尝试
lstDSYDepartment.Items.Add("Administration");
lstDSYDepartment.Items.Add("Imaging Services");
...
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