Question

我有一个应用程序，用户可以根据他/她的需要添加任意数量的tabpages。这些选项卡具有相同的控件（文本框和标签）。每个tabpages上的控件命名如下:(在tabpage1上，控件命名为：txtServer1，txtPort1，txtUser1，txtDbName1。如果用户单击“添加另一个连接按钮”，应用程序将创建第二个标签页，并且控件将命名为：txtServer2，txtPort2，txtUser2，txtDbName2）等......

例如，如果用户有多个tabpages进行设置：

用户点击“添加其他连接”＃39;并且创建了具有相同控件的另一个标签页，用户使用适当的数据填充它：

同样的事情在这里：

这里是带有控件的动态添加标签页的代码：

//when 'add another connection' button is clicked
    private void btnAddConnection_Click(object sender, EventArgs e)
    {
        string tabTitle = "Connection " + (tabControl1.TabCount + 1).ToString();
        TabPage tabPage = new TabPage(tabTitle);
        tabControl1.TabPages.Add(tabPage);
    }

//when another tabpage has been added to tabcontrol
   private void tabControl1_ControlAdded(object sender, ControlEventArgs e)
    {
        //control instances
        TextBox txtServer = new TextBox();
        TextBox txtPort = new TextBox();
        TextBox txtUser = new TextBox();
        TextBox txtDbName = new TextBox();

        Label lblServer = new Label();
        Label lblPort = new Label();
        Label lblUser = new Label();
        Label lblDbName = new Label();

        tabControl1.SelectedTab = tabControl1.TabPages[tabControl1.TabCount - 1]; //select the newly addded tabpage
        tabControl1.SelectedTab.BackColor = tabPage1.BackColor; //tabpage background color

        //lblServer Properties
        lblServer.Location = lblServer1.Location;
        lblServer.Text = lblServer1.Text;
        lblServer.ForeColor = lblServer1.ForeColor;
        lblServer.Name = "lblServer" + tabControl1.TabCount.ToString();

        //lblPort Properties
        lblPort.Location = lblPort1.Location;
        lblPort.Text = lblPort1.Text;
        lblPort.ForeColor = lblPort1.ForeColor;
        lblPort.Name = "lblPort" + tabControl1.TabCount.ToString();

        //lblUser Properties
        lblUser.Location = lblUser1.Location;
        lblUser.Text = lblUser1.Text;
        lblUser.ForeColor = lblUser1.ForeColor;
        lblUser.Name = "lblUser" + tabControl1.TabCount.ToString();

        //lblDbName Properties
        lblDbName.Location = lblDbName1.Location;
        lblDbName.Text = lblDbName1.Text;
        lblDbName.ForeColor = lblDbName1.ForeColor;
        lblDbName.Name = "lblDbName" + tabControl1.TabCount.ToString();

        //txtserver properties
        txtServer.Location = txtServer1.Location;
        txtServer.Width = txtServer1.Width;
        txtServer.Height = txtServer1.Height;
        txtServer.Font = txtServer1.Font;
        txtServer.Name = "txtServer" + tabControl1.TabCount.ToString();

        //txtport properties
        txtPort.Location = txtPort1.Location;
        txtPort.Width = txtPort1.Width;
        txtPort.Height = txtPort1.Height;
        txtPort.Font = txtPort1.Font;
        txtPort.Name = "txtPort" + tabControl1.TabCount.ToString();

        //txtuser properties
        txtUser.Location = txtUser1.Location;
        txtUser.Width = txtUser1.Width;
        txtUser.Height = txtUser1.Height;
        txtUser.Font = txtUser1.Font;
        txtUser.Name = "txtUser" + tabControl1.TabCount.ToString();

        //txtdbname properties
        txtDbName.Location = txtDbName1.Location;
        txtDbName.Width = txtDbName1.Width;
        txtDbName.Height = txtDbName1.Height;
        txtDbName.Font = txtDbName1.Font;
        txtDbName.Name = "txtUser" + tabControl1.TabCount.ToString();

        //add controls to tabpage
        tabControl1.SelectedTab.Controls.Add(lblServer);
        tabControl1.SelectedTab.Controls.Add(lblPort);
        tabControl1.SelectedTab.Controls.Add(lblUser);
        tabControl1.SelectedTab.Controls.Add(lblDbName);
        tabControl1.SelectedTab.Controls.Add(txtServer);
        tabControl1.SelectedTab.Controls.Add(txtPort);
        tabControl1.SelectedTab.Controls.Add(txtUser);
        tabControl1.SelectedTab.Controls.Add(txtDbName);
    }

当用户单击“保存”按钮时，我希望应用程序读取文本框中的每个文本（该URL文本除外），以便将其保存到配置文件中。

所有我能想到的就是这个

private void saveToolStripMenuItem_Click(object sender, EventArgs e)
{
   string connection;
   for (int i = 1; i <= tabControl1.TabCount; i++ )
   {
      connection = "server=" + txtServer[i].Text + ";port=" txtPort[i].Text + ";user=" + txtUser[i].Text + ";dbname=" + txtDbName[i];

      //save to config file code goes here...
   }
}

我知道这不正确。

任何解决方案？谢谢:)）

Answer 1

这是您可以尝试此操作的最简单方法，只需使用以下函数从tabpage中的控件中获取文本

public string getValue(string controlName, TabPage selectedTab)
{
  if (selectedTab.Controls.ContainsKey(controlName)){
    TextBox selectedtb = (TextBox)selectedTab.Controls[controlName];
    return selectedtb.Text;
    }
   else
     return null;
}

并在您的保存代码中使用它，如下所示

string connection;
int i = 1;
TabControl.TabPageCollection pages = tabControl1.TabPages;
      foreach (TabPage page in pages)
      {
         connection = "server=" + getValue("txtServer"+i,page) + ";port=" +getValue("txtPort"+i,page) + ";user=" + getValue("txtUser"+i,page) + ";dbname=" + getValue("txtDbName"+i,page);
         i++;
         //save to config file code goes here...
      }

Answer 2

txtServer [i]。文本它是真的，但你还没有定义数组。

你可以这样做

    //global
        List<TextBox> txtServerList= new List<TextBox>();

private void tabControl1_ControlAdded(object sender, ControlEventArgs e)
    {
        txtServer.Location = txtServer1.Location;
        txtServer.Width = txtServer1.Width;
        txtServer.Height = txtServer1.Height;
        txtServer.Font = txtServer.Font;
        txtServer.Name = "txtServer" + tabControl1.TabCount.ToString();

        txtServerList.Add(txtServer)
        .
        .
        .

    }

最后

for (int i = 1; i <= tabControl1.TabCount; i++ )
{
connection=txtServerList.get(i).Text + ......
}

Answer 3

你可以循环控件并找到匹配的名称，如下所示：

foreach(var page in tabControl1.TabPages){
    var server = ProcessControls(page.Controls, "txtServer");
    //... continue with the others
}

private TextBox ProcessControls(Control ctrlContainer, string name) 
{ 
    foreach (Control ctrl in ctrlContainer.Controls) 
    { 
        if (ctrl.GetType() == typeof(TextBox)) 
        { 
            if(ctrl.Name.StartsWith(name))
                return (TextBox)ctrl;
        }
    } 
}

Answer 4

您可以使用ArrayList存储和访问所有动态添加的控件。为每个动态添加的控件设置名称。它可以基于ArrayList的大小。

我不会显示c＃的确切systax。

第一

声明一个ArrayList或List（Type Safe）

List<Button> buttons = new List<Button>();

我们刚刚为我们的按钮创建了一个存储空间，将在运行时添加。

void your_event (some parameters) {
     Button temp = new Button("Hello");
     temp.Name="button_name";
     YourMainPanel.Controls.add(temp);
     //after creating your button add it to the parent container. of any control where you want this button to be added.
     //you can also set the coordinates of the button if you like
     //after creating the button we need to add it to our List so that we can  
     //access it later, since the value of the 'temp' will change after this  
     //event was invoked in the future.
     buttons.add(temp);
}

有几种方法可以获取List<T>中的项目。一种是使用索引。

void someMethod(some parameters) {
    Button button = buttons.ElementAt(index);
}

阅读运行时添加的文本框

4 个答案: