From ba2fb3b4c437bd463a2b4a4b9e91551842ab5cef Mon Sep 17 00:00:00 2001
From: "deepsource-autofix[bot]"
 <62050782+deepsource-autofix[bot]@users.noreply.github.com>
Date: Mon, 20 Feb 2023 16:00:50 +0000
Subject: [PATCH] Use pattern matching to check and perform type conversion

---
 ExcelMerge/CellTemplateSelector.cs      | 5 ++---
 ExcelMerge/DirectoryGridControl.xaml.cs | 6 ++----
 ExcelMerge/ExcelGridControl.xaml.cs     | 9 +++------
 ExcelMerge/MainWindow.xaml.cs           | 5 ++---
 4 files changed, 9 insertions(+), 16 deletions(-)

diff --git a/ExcelMerge/CellTemplateSelector.cs b/ExcelMerge/CellTemplateSelector.cs
index bc462fe..a59478b 100644
--- a/ExcelMerge/CellTemplateSelector.cs
+++ b/ExcelMerge/CellTemplateSelector.cs
@@ -1,4 +1,4 @@
-using System.Collections.Generic;
+using System.Collections.Generic;
 using System.Linq;
 using System.Text;
 using System.Threading.Tasks;
@@ -25,8 +25,7 @@ public CellTemplateSelector(string binder, int columnID, string tag) {
         public string tag;
 
         public override System.Windows.DataTemplate SelectTemplate(object item, System.Windows.DependencyObject container) {
-            ExcelData rowdata = item as ExcelData;
-            if (rowdata != null) {
+            if (item is ExcelData rowdata) {
 
                 Brush bg = Brushes.White;
                     var rowdiff = rowdata.diffstatus;
diff --git a/ExcelMerge/DirectoryGridControl.xaml.cs b/ExcelMerge/DirectoryGridControl.xaml.cs
index 1f84641..2bb9624 100644
--- a/ExcelMerge/DirectoryGridControl.xaml.cs
+++ b/ExcelMerge/DirectoryGridControl.xaml.cs
@@ -1,4 +1,4 @@
-using System;
+using System;
 using System.Collections.Generic;
 using System.Collections.ObjectModel;
 using System.Linq;
@@ -79,9 +79,7 @@ private void FileGrid_ScrollChanged(object sender, ScrollChangedEventArgs e) {
 
         private void FileGrid_SelectionChanged(object sender, SelectionChangedEventArgs e) {
             if (e.AddedItems.Count > 0) {
-                // chang selected row
-                var row = e.AddedItems[0] as ExcelData;
-                if (row != null) {
+                if (e.AddedItems[0] is ExcelData row) {
                     // 新行 NewRowItem 类
                     DirectoryDifferWindow.instance.OnSelectGridRow(Tag as string, row.rowId);
                 }
diff --git a/ExcelMerge/ExcelGridControl.xaml.cs b/ExcelMerge/ExcelGridControl.xaml.cs
index 78fbace..ebdf0f6 100644
--- a/ExcelMerge/ExcelGridControl.xaml.cs
+++ b/ExcelMerge/ExcelGridControl.xaml.cs
@@ -1,4 +1,4 @@
-using System;
+using System;
 using System.Collections.Generic;
 using System.Collections.ObjectModel;
 using System.Linq;
@@ -352,9 +352,8 @@ private void ExcelGrid_Drop(object sender, DragEventArgs e) {
         private void ExcelGrid_LoadingRow(object sender, DataGridRowEventArgs e) {
             var row = e.Row;
             var index = row.GetIndex();
-            var item = row.Item as ExcelData;
 
-            if (item != null) { 
+            if (row.Item is ExcelData item) { 
                 row.Header = (item.rowId+1).ToString();
                 row.Height = item.maxLineCount * 15+5;
             }
@@ -370,9 +369,7 @@ private void ExcelGrid_ScrollChanged(object sender, ScrollChangedEventArgs e) {
 
         private void ExcelGrid_SelectionChanged(object sender, SelectionChangedEventArgs e) {
             if (e.AddedItems.Count > 0) {
-                // chang selected row
-                var row = e.AddedItems[0] as ExcelData;
-                if (row != null) {
+                if (e.AddedItems[0] is ExcelData row) {
                     // 新行 NewRowItem 类
                     //MainWindow.instance.OnSelectGridRow(Tag as string, row.rowId);
                 }
diff --git a/ExcelMerge/MainWindow.xaml.cs b/ExcelMerge/MainWindow.xaml.cs
index 9e1b7f9..0ef309f 100644
--- a/ExcelMerge/MainWindow.xaml.cs
+++ b/ExcelMerge/MainWindow.xaml.cs
@@ -1,4 +1,4 @@
-using System;
+using System;
 using System.Collections.Generic;
 using System.Linq;
 using System.Text;
@@ -946,8 +946,7 @@ private void SortKeyCombo_SelectionChanged(object sender, SelectionChangedEventA
             var sheetdata = sheetsDiff[src_sheet];
 
             if (e.AddedItems.Count > 0) {
-                var sortkey = e.AddedItems[0] as SheetSortKeyCombo;
-                if (sortkey != null && sheetdata.sortKey != sortkey.ID) {
+                if (e.AddedItems[0] is SheetSortKeyCombo sortkey && sheetdata.sortKey != sortkey.ID) {
                     sheetdata.sortKey = sortkey.ID;
 
                     ReDiffCurSheet();