C# to modify the text instance of the source node in the Treeview, implementation steps: namespace database operations in the file header declaration, declare an object for executing SQL statements to define a database connection string, the set treeView1 editable property to true. open database connection, execute the SQL statement object, to empty treeView1 the original data content, add the root node for treeView1 control, began to read the contents of the data to transform the data in the database field for treeView control node to the root node added to the database fields.

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