c# - object reference not set to an instance of an object. (Exception) -


इस सवाल का पहले से ही एक उत्तर है: < / P>

  • 2 9 उत्तर

    यह अपवाद प्राप्त करने के लिए: ऑब्जेक्ट संदर्भ किसी ऑब्जेक्ट के एक उदाहरण के लिए सेट नहीं है। कृपया मुझे बताइए कि कैसे इसे हल करें। मैंने कोशिश की है जो विवरण में दिया गया है जो अपवाद को हल करने के लिए संकेत प्रदान करता है। 

      निजी voidtreeListCom_CompareNodeValues ​​(ऑब्जेक्टर्स, DevExpress.XtraTreeList.CompareNodeValuesEventArgs ई) {try {string strColName = "उत्पाद"; स्ट्रिंग str1 = e.Node1.GetValue (strColName) .ओस्ट्रिंग (); स्ट्रिंग str2 = e.Node2.GetValue (strColName)। टॉस्ट्रिंग (); यदि (str1 == "जोन" & amp; amp; str2 == "जोन") {if (e.Node1.ParentNode == शून्य) {e.Node1.Selected = true; } ई। परिणाम = 0; } और अगर (str1 == "जोन" & amp; amp; str2; = "क्षेत्र") {ई। परिणाम = -1; } और अगर (str1! = "जोन" & amp; str2 == "जोन") {ई। परिणाम = 1; } Else {strColName = treeListCom.Columns [0] .FieldName; E.Result = e.Node1.GetValue (strColName) .ओस्ट्रिंग ()। तुलना करें (e.Node2.GetValue (strColName)। टॉस्ट्रिंग ()); }} पकड़ (अपवाद एई) {संदेश बॉक्स। दिखाना (ए.ओ.ओस्ट्रिंग (), "क्या"); }}    
     
     
     इसके बजाय इसे आज़माएं:  
      निजी Void treeListCom_CompareNodeValues ​​(ऑब्जेक्टर्स, DevExpress.XtraTreeList.CompareNodeValuesEventArgs ई)   
     मामले में, आप फिर से त्रुटि हो रही है; कृपया हमें बताएं कि किस लाइन पर यह संकेत मिलता है।

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