C# rename file if file exists Code Example, int count = 1; string fileNameOnly = Path.GetFileNameWithoutExtension(fullPath); string extension = Path.GetExtension(fullPath); string path = Path.GetDirectoryName Automated Renaming of Files in the Windows Manner When File Already Exists Solution 1...
if (!File.Exists(extractFile)) { MessageBox.Show(string.Format("Excel File '{0}' to extract is not found (Current Directory: {1}).", extractFile, Environment.CurrentDirectory)); return; } // write data in workbook from xls document. StreamReader input = new StreamReader(extractFile); IWo...
//Set the path to the database file. _path = path; //Douse the database file already exist? if (File.Exists(path)) Database.Load(path); //If so, load it. //If a main node already exists in the database // use it. If not, create it. MainNode = (Database.ChildNodes.Count ...
if (!File.Exists(extractFile)) { MessageBox.Show(string.Format("Excel File '{0}' to extract is not found (Current Directory: {1}).", extractFile, Environment.CurrentDirectory)); return; } // write data in workbook from xls document. StreamReader input = new StreamReader(extractFile); IWo...
1、使用Directory.Exists或File.Exist方法,如果前者为真,则路径表示目录;如果后者为真,则路径表示文件; 2、上面的方法有个缺点就是不能处理那些不存在的文件或目录。这时可以考虑使用Path.GetFileName方法获得 其包含的文件名,如果一个路径不为空,而文件名为空那么它表示目录,否则表示文件; ...
if (!File.Exists(extractFile)) { MessageBox.Show(string.Format("Excel File '{0}' to extract is not found (Current Directory: {1}).", extractFile, Environment.CurrentDirectory)); return; } // write data in workbook from xls document. ...
Atomic operations to read or write all the contents of a file Operations to create or open files for reading Operations to create or open files for writing Simple file Operations(File.Exists File.Delete and so on) When a file is opened or created ,the file class can return several types...
其 默认值是True。3、有效性验证为了自动验证文件名的有效性,应使用属性ValidateNames 、CheckFileExists 和CheckPathExists 。4、覆盖已有文件如果PromptCreate属性设置为 True 29、,就会询问用户是否要创建一个新文件,如果OverwritePrompt属性设为true,就会询问用户是否真的想覆盖已有的文件。5、SaveFileDialog 的属性第...
Exists() : Determines whether the specified file exists. Copy() : Copies a file to a new location. Move() : Moves a specified file to a new location using System; using System.IO; namespace Example { class Program { static void Main(string[] args) { string str = "Working with file...
if (sfDialog.ShowDialog() == DialogResult.OK) { //do stuff } For additional information, visit http://msdn.microsoft.com/en-us/library/system.windows.forms.savefiledialog.aspx OpenFileDialog Class, This class allows you to check whether a file exists and to open it. The ShowReadOnly proper...