【散分】把打开子窗体封装成方法

[FlyBee]

 Form2 form2;
        private void 窗体1ToolStripMenuItem_Click(object sender, EventArgs e)
        {
            if (form2 == null || form2.IsDisposed)
            {
                form2 = new Form2();
                form2.MdiParent = this;
                form2.Show();
            }
            else { form2.Activate(); }
        }

想把打开子窗体这个事件封装成一个方法提高代码的复用利。大家有什么好的方法学习学习。

[caorenlong]

接分

[满衣兄]

        #region 子窗体只保留一个实例
        /// <summary>
        /// 非主窗体打开窗体，不设置子窗体
        /// </summary>
        /// <param name="ChildTypeString"></param>
        public void OpenWindowNoChild(string ChildTypeString)
        {
            Form myChild = null;
            if (!ContainMDIChild(ChildTypeString))
            {
                // Get current process assembly
                Assembly assembly = Assembly.GetExecutingAssembly();
                // Create data type using type string
                Type typForm = assembly.GetType(ChildTypeString);
                // Create object using type's "InvokeMember" method
                Object obj = typForm.InvokeMember(
                    null,
                    BindingFlags.DeclaredOnly |
                    BindingFlags.Public | BindingFlags.NonPublic |
                    BindingFlags.Instance | BindingFlags.CreateInstance,
                    null,
                    null,
                    null);
                // Show child form 
                if (obj != null)
                {
                    myChild = obj as Form;
                    myChild.MdiParent = this;
                    myChild.Show();
                    myChild.Focus();
                }
            }
        }
        /// <summary>
        /// Open child window
        /// </summary>
        /// <param name="ChildTypeString"></param>
        public void OpenWindow(string ChildTypeString)
        {
            Form myChild = null;
            if (!ContainMDIChild(ChildTypeString))
            {
                // Get current process assembly
                Assembly assembly = Assembly.GetExecutingAssembly();
                // Create data type using type string
                Type typForm = assembly.GetType(ChildTypeString);
                // Create object using type's "InvokeMember" method
                Object obj = typForm.InvokeMember(
                    null,
                    BindingFlags.DeclaredOnly |
                    BindingFlags.Public | BindingFlags.NonPublic |
                    BindingFlags.Instance | BindingFlags.CreateInstance,
                    null,
                    null,
                    null);
                // Show child form 
                if (obj != null)
                {
                    myChild = obj as Form;
                    myChild.MdiParent = this;
                    myChild.WindowState = FormWindowState.Maximized;
                    myChild.Show();
                    myChild.Focus();
                }
            }
        }

        /// <summary>
        /// Search mdi child form by specific type string
        /// </summary>
        /// <param name="ChildTypeString"></param>
        /// <returns></returns>
        public bool ContainMDIChild(string ChildTypeString)
        {
            Form myMDIChild = null;
            foreach (Form f in this.MdiChildren)
            {
                if (f.GetType().ToString() == ChildTypeString)
                {
                    // found it 
                    myMDIChild = f;
                    break;
                }
            }
            // Show the exist form
            if (myMDIChild != null)
            {
                myMDIChild.WindowState = FormWindowState.Maximized;
                myMDIChild.TopMost = true;
                myMDIChild.Show();
                myMDIChild.Focus();
                return true;
            }
            else
                return false;
        }
        #endregion

[TkingCN]

顶顶顶 关注一下 我知道的方法和你一样

[Neil198]

using System;
using System.Collections.Generic;
using System.Text;
using System.Windows.Forms;

namespace Test11
{
    static class Class1
    {
        public static void showForm(Form f)
        {
            f.Show();
        }
    }
}

 private void button1_Click(object sender, EventArgs e)
        {

            Class1.showForm(new Form2());
           

        }

[messi_yang]

關注

[修改一下昵称]

jf

[FlyBee]

有没有什么办法把 Form2 和 form2 用参数传进去

[MOmo400]

[Quote=引用 4 楼 yfqvip 的回复:]
C# code
#region 子窗体只保留一个实例
/// <summary>
/// 非主窗体打开窗体，不设置子窗体
/// </summary>
/// <param name="ChildTypeString"></param>
public void OpenWindowNoChild(string ChildTypeString)
{
Form myChild = null;
if (!ContainMDIChild(ChildTypeString))
{
// Get current pr…
[/Quote]

UP

[biny237]

不会 学习。。。

[y82907966]

来看看

[angel6709]

dingding

[十八道胡同]

友情帮顶

[NX_Soft]

[Quote=引用 4 楼 yfqvip 的回复:]
C# code#region子窗体只保留一个实例///<summary>///非主窗体打开窗体，不设置子窗体///</summary>///<param name="ChildTypeString"></param>publicvoidOpenWindowNoChild(stringChildTypeString)
{
Form myChild=null;if(!ContainMDIChild(ChildTypeString))
{//Get current process assemblyAssembly assembly=Assembly.GetExecutingAssembly();//Create data type using type stringType ty…
[/Quote]
这个方法试过了，不好使

[nyq1999]

BD

[LoveLife_Go]

学习

[mlliqiushi]

mark
浏览中！~~

[FlyBee]

自己顶下 期待高人出现

[cloudfang]

//toolStrip1的每个item的tag设为要打开的Form。
Hashtable htForms = new Hashtable();

        private void toolStrip1_ItemClicked(object sender, ToolStripItemClickedEventArgs e)
        {
            string FormName=Convert.ToString(e.ClickedItem.Tag);
            Type type=Type.GetType(FormName);
            object obj = null;
            obj=htForms[FormName];
            if (obj == null)
            {
                obj = Activator.CreateInstance(type);
                if (obj is Form)
                {
                    htForms.Add(FormName, (Form)obj);
                    Form frm = (Form)obj;
                    frm.Show();
                }
            }
            else
            {
                if (obj is Form)
                {
                    ((Form)obj).Activate();
                }
            }
        }

[cloudfang]

给toolscrip1设置ItemClicked即可，不需要再为每个menuitem都设置单击事件。

[suifeng55555]

不错，值得学习！