Foreach循环不循环通过复选框列表asp .net

Question

我正在尝试读取 SQL 数据库中存在的值列表，如果该值存在，则需要选中复选框列表中的复选框。目前，我可以读取特定员工的值，但是当我尝试遍历复选框列表时，它会完全跳过它。我可以通过完美地检查项目来添加新的数据条目，但它只是导致问题的读取：

我下面的示例代码是为了测试它是否甚至循环通过复选框列表。

var asd = GetEmployeeSpecificDisabilities(idNum, connString); //returns a list of a specific employees disabilities;

string value = string.Empty;

foreach (ListItem item in disabilityList.Items)
{
    value += item.Selected ? item.Text + "," : "";

以下代码在添加新员工详细信息时完美运行：

//create new list object
EmployeeList newEmployee = new EmployeeList();
    
newEmployee.EmployeeNumber = txtEmployeeNumber.Text;
newEmployee.IDNumber = txtIDnumber.Text;
newEmployee.employeeSurname = txtSurname.Text;
newEmployee.employeeName = txtName.Text;
newEmployee.numberOfDependants = Convert.ToInt32(txtNumOfDependants.Text);
newEmployee.Race = lsRaces.SelectedValue;
newEmployee.Gender = lsGender.SelectedValue;
                    
//if employee has a disability
if (disabilityList.Visible == true)
{
    foreach (ListItem x in disabilityList.Items)
    {
        if (x.Selected)
        {
            newEmployee.Disabilityreference_Id = Convert.ToInt32(x.Value);
            newEmployee.CreateNewEmployee(connString, newEmployee);
        }
    }
} 
else
{
    newEmployee.CreateNewEmployee(connString, newEmployee);
}
    
Response.Redirect("Default.aspx");

前端代码：

<asp:CheckBoxList ID="disabilityList" runat="server" style="left: 19px; top: 3px; width: 266px; border:medium; padding:inherit" DataSourceID="Disabilities" DataTextField="DisabilityReference" DataValueField="Id" Visible ="true" CssClass="checkbox checkbox"  Font-Size="Medium">
        </asp:CheckBoxList>
        <asp:SqlDataSource ID="Disabilities" runat="server" ConnectionString="<%$ ConnectionStrings:EmployeeDBConnectionString %>" SelectCommand="SELECT * FROM [Disabilities]"></asp:SqlDataSource>

Answer 1

看来您需要迭代 GetEmployeeSpecificDisabilities 并与 disabilityList 进行比较：

var employeeDisabilities = GetEmployeeSpecificDisabilities(idNum, connString);
 
foreach(var employeeDisability in employeeDisabilities)
{
    foreach (ListItem item in disabilityList.Items)
    {
        if(item.Value == employeeDisability.Disabilityreference_Id.ToString())
        {
            item.Selected = true;
        }
    }
}