我创建了一个UserControl,它上面有一个FlowLayoutPanel。我在运行时使用PictureBoxes的CollectionBase填充此面板。然后我的WindowsForm上有一个FlowLayoutPanel,我使用我的UserControls的CollectionBase在运行时填充。如何访问存储在System.Collections.CollectionBase中的UserControl中的方法?
现在,我希望能够访问我的UserControl中的自定义函数,以便将另一个PictureBox添加到实例化(现有)UserControl的FlowLayoutPanel中。我如何访问该功能来做到这一点?
该函数在UserControl中是公共的,但我无法通过CollectionBase来使用它。
这里是我的用户控件代码:
public partial class UserDisplay : UserControl
{
public UserDisplay()
{
InitializeComponent();
myEquipArray = new ImageArray(flpnlTools);
}
public void AddEquip(string EquipName, Image EquipImage)
{
myEquipArray.AddNewEquip(EquipName, EquipImage);
}
//Accessor
public ControlCollection Equips
{
get
{
return flpnlEquips.Controls;
}
}
}
public class ImageArray : System.Collections.CollectionBase
{
private readonly System.Windows.Forms.FlowLayoutPanel HostPanel;
public ImageArray(FlowLayoutPanel hostPanel)
{
HostPanel = hostPanel;
}
public System.Windows.Forms.PictureBox AddNewEquip(string EquipName, Image EquipImage)
{
PictureBox pbA = new PictureBox();
this.List.Add(pbA);
HostPanel.Controls.Add(pbA);
pbA.Tag = EquipName;
pbA.Image = EquipImage;
return pbA;
}
public void RemoveEquip(string EquipName)
{
if (this.Count > 0)
{
int i = 0;
while (EquipName != HostPanel.Controls[i].Tag.ToString())
{
i++;
}
HostPanel.Controls.Remove(this[EquipName]);
this.List.RemoveAt(i);
}
}
public PictureBox this[string EquipName]
{
get
{
int i = 0;
while (EquipName != HostPanel.Controls[i].Tag.ToString())
{
i++;
}
return (PictureBox)this.List[i];
}
}
}
我用这个类来实现我的WindowsForm的UserConrol:
public class UserDsp : System.Collections.CollectionBase
{
private readonly System.Windows.Forms.FlowLayoutPanel HostPanel;
public DisplayControl.UserDisplay AddNewUser(Int64 UserID, string UserName, Image UserImage, string EquipName, Image EquipImage)
{
DisplayControl.UserDisplay newUser = new DisplayControl.UserDisplay();
this.List.Add(newUser);
HostPanel.Controls.Add(newUser);
newUser.Tag = UserID;
newUser.UserName = UserName;
newUser.UserImage = UserImage;
newUser.AddEquip(EquipName, EquipImage); //THIS ADDS THE PICTUREBOX CORRECTLY
return newUser;
}
public void AddNewEquip(Int64 UserID, Int64 EquipID, string EquipName, Image EquipImage)
{
if (this.Count > 0)
{
int i = 0;
while (UserID != Convert.ToInt64(HostPanel.Controls[i].Tag))
{
i++;
}
// Found the Control with UserID
HostPanel.Controls[i].AddEquip(EquipName, EquipImage); //THIS DOES NOT WORK
}
}
public UserDsp(System.Windows.Forms.FlowLayoutPanel hostPanel)
{
HostPanel = hostPanel;
}
public void RemoveUser(Int64 UserID)
{
if (this.Count > 0)
{
int i = 0;
while (UserID != Convert.ToInt64(HostPanel.Controls[i].Tag))
{
i++;
}
HostPanel.Controls.Remove(this[UserID]);
this.List.RemoveAt(i);
}
UsersLogdIn.Remove(UserID);
}
public DisplayControl.UserDisplay this[Int64 UserID]
{
get
{
int i = 0;
while (UserID != Convert.ToInt64(HostPanel.Controls[i].Tag))
{
i++;
}
return (DisplayControl.UserDisplay)this.List[i];
}
}
public List<long> usersLogdIn
{
get
{
return UsersLogdIn;
}
}
}
}
在这段代码中,我可以创建控件的一个新的PictureBox FlowLayoutPanel实例化控件时:
newUser.AddEquip(EquipName, EquipImage); //THIS ADDS THE PICTUREBOX CORRECTLY
但是当我尝试ac塞斯它通过CollectionBase的:
public void AddNewEquip(Int64 UserID, Int64 EquipID, string EquipName, Image EquipImage)
{
if (this.Count > 0)
{
int i = 0;
while (UserID != Convert.ToInt64(HostPanel.Controls[i].Tag))
{
i++;
}
// Found the Control with UserID
HostPanel.Controls[i].AddEquip(EquipName, EquipImage); //THIS DOES NOT WORK
}
}
我也试图拉控制输出是这样的:
public void AddNewEquip(Int64 UserID, Int64 EquipID, string EquipName, Image EquipImage)
{
if (this.Count > 0)
{
int i = 0;
while (UserID != Convert.ToInt64(HostPanel.Controls[i].Tag))
{
i++;
}
// Found the Control with UserID
UserDisplay newUserDisplay = HostPanel.Controls[i] as UserDisplay //THIS DOES NOT WORK
}
}
我已经到处找关于这个帮助,但还没有找到任何有关。请帮忙!
谢谢。
当调试断点到达'HostPanel.Controls [i] .AddEquip(EquipName,EquipImage);时,请告诉我'Count'和'i'的值。 //这是行不通的' –
你是否在添加代码之后像下面这样拉出控件:'newUserDisplay.AddEquip(EquipName,EquipImage);' –
我之后添加了代码。我不知道为什么它不起作用。 – kanderson