I have got a problem regarding loading of multiple assemblies, actually its required for an editor which implements the intellisenseas in vb or dotnet.
for that it is required to load that assembly whose sub-classes are required to be loaded into the list box after pressing dot.
for example in the code given below i have given the path of System.dll assembly file, now all the sub class of System.Data are automatically displayed in list box but if i need to load more than one assmbly i.e 5-6 assemblies how should i do that.
source code
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- private void readAssembly()
- {
- this.treeViewItems.Nodes.Clear();
- namespaces = new Hashtable();
- Type [] assemblyTypes = assembly.GetTypes();
- this.treeViewItems.Nodes.Clear();
- // Cycle through types
- foreach (Type type in assemblyTypes)
- {
- if ( type.Namespace != null )
- {
- if ( namespaces.ContainsKey(type.Namespace) )
- {
- // Already got namespace, add the class to it
- TreeNode treeNode = (TreeNode) namespaces[type.Namespace];
- treeNode = treeNode.Nodes.Add(type.Name);
- this.addMembers(treeNode,type);
- if ( type.IsClass )
- {
- treeNode.Tag = MemberTypes.Custom;
- }
- }
- else
- {
- // New namespace
- TreeNode membersNode = null;
- if ( type.Namespace.IndexOf(".") != -1 )
- {
- // Search for already existing parts of the namespace
- nameSpaceNode = null;
- foundNode = false;
- this.currentPath = "";
- searchTree(this.treeViewItems.Nodes,type.Namespace,false);
- // No existing namespace found
- if ( nameSpaceNode == null )
- {
- // Add the namespace
- string[] parts = type.Namespace.Split('.');
- TreeNode treeNode = treeViewItems.Nodes.Add(parts[0]);
- string sNamespace = parts[0];
- if ( !namespaces.ContainsKey(sNamespace) )
- {
- namespaces.Add(sNamespace,treeNode);
- }
- for (int i=1;i < parts.Length;i++)
- {
- treeNode = treeNode.Nodes.Add(parts[i]);
- sNamespace += "." +parts[i];
- if ( !namespaces.ContainsKey(sNamespace) )
- {
- namespaces.Add(sNamespace,treeNode);
- }
- }
- membersNode = treeNode.Nodes.Add(type.Name);
- }
- else
- {
- // Existing namespace, add this namespace to it,
- // and add the class
- string[] parts = type.Namespace.Split('.');
- TreeNode newNamespaceNode = null;
- if ( !namespaces.ContainsKey(type.Namespace) )
- {
- newNamespaceNode = nameSpaceNode.Nodes.Add(parts[parts.Length-1]);
- namespaces.Add(type.Namespace,newNamespaceNode);
- }
- else
- {
- newNamespaceNode = (TreeNode) namespaces[type.Namespace];
- }
- if ( newNamespaceNode != null )
- {
- membersNode = newNamespaceNode.Nodes.Add(type.Name);
- if ( type.IsClass )
- {
- membersNode.Tag = MemberTypes.Custom;
- }
- }
- }
- }
- else
- {
- // Single root namespace, add to root
- membersNode = treeViewItems.Nodes.Add(type.Namespace);
- }
- // Add all members
- if ( membersNode != null )
- {
- this.addMembers(membersNode,type);
- }
- }
- }
- }
- }
- ///
- /// Adds all members to the node's children, grabbing the parameters
- /// for methods.
- ///
- ///
- ///
- private void addMembers(TreeNode treeNode,System.Type type)
- {
- // Get all members except methods
- MemberInfo[] memberInfo = type.GetMembers();
- for (int j=0;j < memberInfo.Length;j++)
- {
- if ( memberInfo[j].ReflectedType.IsPublic && memberInfo[j].MemberType != MemberTypes.Method )
- {
- TreeNode node = treeNode.Nodes.Add(memberInfo[j].Name);
- node.Tag = memberInfo[j].MemberType;
- }
- }
- // Get all methods
- MethodInfo[] methodInfo = type.GetMethods();
- for (int j=0;j < methodInfo.Length;j++)
- {
- TreeNode node = treeNode.Nodes.Add(methodInfo[j].Name);
- string parms = "";
- ParameterInfo[] parameterInfo = methodInfo[j].GetParameters();
- for (int f=0;f < parameterInfo.Length;f++)
- {
- parms += parameterInfo[f].ParameterType.ToString()+ " " +parameterInfo[f].Name+ ", ";
- }
- // Knock off remaining ", "
- if ( parms.Length > 2 )
- {
- parms = parms.Substring(0,parms.Length -2);
- }
- node.Tag = parms;
- }
- }
- ///
- /// Searches the tree view for a namespace, saving the node. The method
- /// stops and returns as soon as the namespace search can't find any
- /// more items in its path, unless continueUntilFind is true.
- ///
- ///
- ///
- ///
- private void searchTree(TreeNodeCollection treeNodes,string path,bool continueUntilFind)
- {
- if ( this.foundNode )
- {
- return;
- }
- string p = "";
- int n = 0;
- n = path.IndexOf(".");
- if ( n != -1)
- {
- p = path.Substring(0,n);
- if ( currentPath != "" )
- {
- currentPath += "." +p;
- }
- else
- {
- currentPath = p;
- }
- // Knock off the first part
- path = path.Remove(0,n+1);
- }
- else
- {
- currentPath += "." +path;
- }
- for (int i=0;i < treeNodes.Count;i++)
- {
- if ( treeNodes[i].FullPath == currentPath )
- {
- if ( continueUntilFind )
- {
- nameSpaceNode = treeNodes[i];
- }
- nameSpaceNode = treeNodes[i];
- // got a dot, continue, or return
- this.searchTree(treeNodes[i].Nodes,path,continueUntilFind);
- }
- else if ( !continueUntilFind )
- {
- foundNode = true;
- return;
- }
- }
- }
- ///
- /// Searches the tree until the given path is found, storing
- /// the found node in a member var.
- ///
- ///
- ///
- private void findNode(string path,TreeNodeCollection treeNodes)
- {
- for (int i=0;i < treeNodes.Count;i++)
- {
- if ( treeNodes[i].FullPath == path )
- {
- this.findNodeResult = treeNodes[i];
- break;
- }
- else if ( treeNodes[i].Nodes.Count > 0 )
- {
- this.findNode(path,treeNodes[i].Nodes);
- }
- }
- }
- ///
- /// Called when a "." is pressed - the previous word is found,
- /// and if matched in the treeview, the members listbox is
- /// populated with items from the tree, which are first sorted.
- ///
- /// Whether an items are found for the word
- private bool populateListBox()
- {
- bool result = false;
- string word = this.getLastWord();
- //System.Diagnostics.Debug.WriteLine(" - Path: " +word);
- if ( word != "" )
- {
- findNodeResult = null;
- findNode(word,this.treeViewItems.Nodes);
- if (this.findNodeResult != null )
- {
- this.listBoxAutoComplete.Items.Clear();
- if ( this.findNodeResult.Nodes.Count > 0 )
- {
- result = true;
- // Sort alphabetically (this could be replaced with
- // a sortable treeview)
- MemberItem[] items = new MemberItem[this.findNodeResult.Nodes.Count];
- for (int n=0;n < this.findNodeResult.Nodes.Count;n++)
- {
- MemberItem memberItem = new MemberItem();
- memberItem.DisplayText = this.findNodeResult.Nodes[n].Text;
- memberItem.Tag = this.findNodeResult.Nodes[n].Tag;
- if ( this.findNodeResult.Nodes[n].Tag != null )
- {
- System.Diagnostics.Debug.WriteLine(this.findNodeResult.Nodes[n].Tag.GetType().ToString());
- }
- items[n] = memberItem;
- }
- Array.Sort(items);
- for (int n=0;n < items.Length;n++)
- {
- int imageindex = 0;
- if ( items[n].Tag != null )
- {
- // Default to method (contains text for parameters)
- imageindex = 2;
- if ( items[n].Tag is MemberTypes)
- {
- MemberTypes memberType = (MemberTypes) items[n].Tag;
- switch ( memberType )
- {
- case MemberTypes.Custom:
- imageindex = 1;
- break;
- case MemberTypes.Property:
- imageindex = 3;
- break;
- case MemberTypes.Event:
- imageindex = 4;
- break;
- }
- }
- }
- this.listBoxAutoComplete.Items.Add(new GListBoxItem(items[n].DisplayText,imageindex) );
- }
- }
- }
- }
- return result;
- }
- ///
- /// Autofills the selected item in the member listbox, by
- /// taking everything before and after the "." in the richtextbox,
- /// and appending the word in the middle.
- ///
- private void selectItem()
- {
- if ( this.wordMatched )
- {
- int selstart = this.richTextBox1.SelectionStart;
- int prefixend = this.richTextBox1.SelectionStart - typed.Length;
- int suffixstart = this.richTextBox1.SelectionStart + typed.Length;
- if ( suffixstart >= this.richTextBox1.Text.Length )
- {
- suffixstart = this.richTextBox1.Text.Length;
- }
- string prefix = this.richTextBox1.Text.Substring(0,prefixend);
- string fill = this.listBoxAutoComplete.SelectedItem.ToString();
- string suffix = this.richTextBox1.Text.Substring(suffixstart,this.richTextBox1.Text.Length - suffixstart);
- this.richTextBox1.Text = prefix + fill + suffix;
- this.richTextBox1.SelectionStart = prefix.Length + fill.Length;
- }
- }
- ///
- /// Searches backwards from the current caret position, until
- /// a space or newline is found.
- ///
- /// The previous word from the carret position
- private string getLastWord()
- {
- string word = "";
- int pos = this.richTextBox1.SelectionStart;
- if ( pos > 1 )
- {
- string tmp = "";
- char f = new char();
- while ( f != ' ' && f != 10 && pos > 0 )
- {
- pos--;
- tmp = this.richTextBox1.Text.Substring(pos,1);
- f = (char) tmp[0];
- word += f;
- }
- char[] ca = word.ToCharArray();
- Array.Reverse( ca );
- word = new String( ca );
- }
- return word.Trim();
- }
- #endregion
- private void FormMain_Load(object sender, EventArgs e)
- {
- readAssembly();
- }
- }
Raja