WinForm开发必知：主窗体如何安全调用子窗体的方法
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"鏄庢槑鍦ㄤ富绐椾綋鍐欎簡璋冪敤浠ｇ爜锛岃繍琛屽悗瀛愮獥浣撴娲讳笉鍝嶅簲锛?鈥斺€旇繖鍦烘櫙鐔熶笉鐔熸倝锛熷氨鍍忓鐫€蹇€掓煖鍠婂紑闂ㄥ瘑鐮侊紝缁撴灉鍙戠幇杈撶殑鏄殧澹佹煖瀛愮殑瀵嗙爜...浠婂ぉ灏卞甫澶у鐮磋В杩欎釜"璺ㄦ湇鑱婂ぉ"闅鹃锛?/p>
馃攳鍏堟悶鎳傝嚧鍛借鍖猴紙鏂版墜蹇呰俯鐨?涓潙锛?/h3>
- 鈥?strong>鈥嬬洿鎺ew瀛愮獥浣撳氨璋冪敤鈥?/strong>鈥?鈫?鐩稿綋浜庣粰鍏嬮殕浜哄彂鎸囦护锛屽師鐗堟牴鏈笉鐞嗕細
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csharp澶嶅埗// 瀛愮獥浣撳啓涓叕寮€鏂规硶
public void 鏇存柊鏁版嵁(string 鍐呭)
{
label1.Text = 鍐呭 + "馃崡"; // 鍔犱釜楦¤吙鏇撮啋鐩?/span>
}
// 涓荤獥浣撴搷浣滐紙閲嶇偣锛侊級
if(childForm != null && !childForm.IsDisposed)
{
childForm.鏇存柊鏁版嵁("鑰佹澘鎵撻挶浜嗭紒");
}
// 瀛愮獥浣撳啓涓叕寮€鏂规硶
public void 鏇存柊鏁版嵁(string 鍐呭)
{
label1.Text = 鍐呭 + "馃崡"; // 鍔犱釜楦¤吙鏇撮啋鐩?/span>
}
// 涓荤獥浣撴搷浣滐紙閲嶇偣锛侊級
if(childForm != null && !childForm.IsDisposed)
{
childForm.鏇存柊鏁版嵁("鑰佹澘鎵撻挶浜嗭紒");
}馃毃鈥?strong>鈥嬮闄╂彁绀衡€?/strong>鈥嬶細灏卞儚鎶婂闂ㄩ挜鍖欑粰閭诲眳锛屾柟渚夸絾鏈夊畨鍏ㄩ殣鎮?/p>
鎷涘紡鈶?濮旀墭蹇€掑憳锛堟帹鑽愭柟妗堬級
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csharp澶嶅埗// 瀛愮獥浣撹缃?/span> public event Action<string> 閫佽揣浜嬩欢; void 鎸夐挳鐐瑰嚮鏃?) { 閫佽揣浜嬩欢?.Invoke("鎮ㄧ殑绋嬪簭鐚垮鍗栧埌浜嗭紒"); } // 涓荤獥浣撶鏀?/span> childForm.閫佽揣浜嬩欢 += (鍖呰９) => { textBox1.Text = 鍖呰９ + "馃摝"; };
鉁呪€?strong>鈥嬩紭鍔库€?/strong>鈥嬶細瀹屽叏瑙ｈ€︼紝瀛愮獥浣撴牴鏈笉鐭ラ亾涓荤獥浣撳瓨鍦?/p>
鎷涘紡鈶?涓棿鍟嗚禋宸环锛堥潤鎬佺被鏂规锛?/h4>
csharp澶嶅埗public static class 椹跨珯
{
public static Form 涓荤獥浣撲粨搴?
}
// 涓荤獥浣撳垵濮嬪寲鏃?/span>
椹跨珯.涓荤獥浣撲粨搴?= this;
// 瀛愮獥浣撹皟鐢?/span>
(椹跨珯.涓荤獥浣撲粨搴?as MainForm)?.鏇存柊鐣岄潰("瀵勫瓨鐨勫揩閫掕鍙栦欢");
public static class 椹跨珯
{
public static Form 涓荤獥浣撲粨搴?
}
// 涓荤獥浣撳垵濮嬪寲鏃?/span>
椹跨珯.涓荤獥浣撲粨搴?= this;
// 瀛愮獥浣撹皟鐢?/span>
(椹跨珯.涓荤獥浣撲粨搴?as MainForm)?.鏇存柊鐣岄潰("瀵勫瓨鐨勫揩閫掕鍙栦欢");鈿狅笍鈥?strong>鈥嬩娇鐢ㄥ満鏅€?/strong>鈥嬶細閫傚悎璧跺伐涓存椂鏂规锛岄暱鏈熼」鐩厧鐢紒
馃搳涓夊ぇ鏂规瀵规瘮琛?/h3>
| 鍏紑璋冪敤 | 濮旀墭浜嬩欢 | 闈欐€佺被涓浆 | |
|---|---|---|---|
| 瀹夊叏鎬?/td> | 鈽呪槄鈽嗏槅鈽?/td> | 鈽呪槄鈽呪槄鈽?/td> | 鈽呪槄鈽呪槅鈽?/td> |
| 鑰﹀悎搴?/td> | 钘曟柇涓濊繛 | 瀹屽叏鍒嗙 | 鏆椾腑鍕剧粨 |
| 涓婃墜闅惧害 | 骞煎効鍥?/td> | 澶у鐢?/td> | 楂樹腑鐢?/td> |
| 缁存姢鎴愭湰 | 瀹规槗鐖嗙偢 | 鐪佸績 | 瀹氭椂鐐稿脊 |
馃殤鎬ユ晳鎸囧崡锛氭姤閿欐椂鍏堟煡杩?鐐?/h3>
- 瀛愮獥浣撳疄渚嬫槸涓嶆槸null浜嗭紵锛堢┖寮曠敤鎶ラ敊鍗?7%锛?/li>
- 鎺т欢鏄笉鏄法绾跨▼璁块棶浜嗭紵锛堣寰楃敤Invoke锛?/li>
- 浜嬩欢鏈夋病鏈夋纭粦瀹氾紵锛堟柊鎵嬪父婕忓啓+=锛?/li>
- 绐椾綋鏄笉鏄凡缁廌ispose浜嗭紵锛堝叧闂悗瑕佸強鏃剁疆null锛?/li>
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