c# - Conditionally Enable Button on TreeNode focus -

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मेरे पास निम्न TreeView संरचना है:

मैं बटन 1 बटन (" डाउनलोड फ़ाइल ") को सक्षम करना चाहता हूं, केवल जब Scan_XX या File_XX पदानुक्रम में स्तर चयनित हैं।

अपने कोड के लिए AfterSelect ईवेंट एक अच्छी जगह है।

यदि आप केवल नोड के पाठ से चिंतित हैं, तो इस छोटे से छोटे कोड के बारे में कैसे: 

  निजी शून्य पेड़दृश्य 1_अफ़र चुनें (ऑब्जेक्ट प्रेषक, ट्री वीवएवेंटएरग्स ई) {button1.Enabled = ( E.Node.Text.StartsWith ("Scan_") || ई। नोडटेक्स्ट.स्टर्ट्स ("फाइल_")); }

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