日志查看：优化空日志显示

Tools/UI/wLogViewer.cs

@@ -31,7 +31,6 @@ namespace Tools.UI
             var list = new List<string> {
                 Encoding.Default.HeaderName.ToUpper(),
                 Encoding.UTF8.HeaderName.ToUpper(),
-                Encoding.ASCII.HeaderName.ToUpper(),
             };
             this.tscbEncoding.Items.AddRange(list.Distinct().ToArray());
             this.tscbEncoding.SelectedIndex = 0;
@@ -133,14 +132,15 @@ namespace Tools.UI
                 if (token.IsCancellationRequested)
                     return;
                 //读取日志内容
-                var buffer = new byte[1024];
+                var initLength = 1024;
+                var buffer = new byte[initLength];
                 var fs = new FileStream($@"{this.LogPath}\{fileName}", FileMode.Open, FileAccess.Read);
                 //初始化进度条
                 this.AsyncUI(() => {
-                    this.progressBar1.Maximum = Math.Max(1, (int)(fs.Length / 1024));
+                    this.progressBar1.Maximum = Math.Max(1, (int)(fs.Length / initLength));
                     this.progressBar1.Value = 0;
                 });
-                StringBuilder sb = new StringBuilder(1024);
+                StringBuilder sb = new StringBuilder(initLength);
                 while (fs.Read(buffer, 0, buffer.Length) > 0)
                 {
                     this.AsyncUI(() =>
@@ -151,7 +151,14 @@ namespace Tools.UI
                     sb.Append(encode.GetString(buffer));
                 }
                 //显示日志内容
-                this.AsyncUI(() => this.textBox1.Text = sb.ToString());
+                this.AsyncUI(() => {
+                    this.textBox1.Text = sb.ToString();
+                    if (this.textBox1.Text.Length == 0)
+                    {
+                        this.progressBar1.Value = this.progressBar1.Maximum;
+                        this.textBox1.Text = "***该日志文件为空***";
+                    }
+                });
                 //释放资源
                 sb.Clear();
                 fs.Close();