- [New] Query support strict open xml, thanks [Weilence (Lowell)](https://github.com/Weilence) #335

- [New] SaveAs use the configured CultureInfo to write format cell value, thanks [0xced (Cédric Luthi)](https://github.com/0xced) #333
- [New] SaveAsByTemplate will clean template string when parameter is IEnumerable and empty collection. #I4WM67

Author: shps951023

docs/README.md

@@ -17,7 +17,11 @@
 ---
 
 ### 1.24.0
+- [New] Query support strict open xml, thanks [Weilence (Lowell)](https://github.com/Weilence)  #335 
+- [New] SaveAs use the configured CultureInfo to write format cell value, thanks [0xced (Cédric Luthi)](https://github.com/0xced) #333
 - [New] SaveAsByTemplate default ignore template missing parameter key exception, OpenXmlConfiguration.IgnoreTemplateParameterMissing can control it. #I4WXFB
+- [New] SaveAsByTemplate will clean template string when parameter is IEnumerable and empty collection. #I4WM67
+
 
 ### 1.23.3
 - [Bug] SaveAs CSV when value is DataTable, if Key contains `"` then column name will not show `"`。 #I4WDA9

docs/README.zh-CN.md

@@ -25,7 +25,10 @@
 ---
 
 ### 1.24.0
+- [New] Query 支持 strict open xml, 感谢 [Weilence (Lowell)](https://github.com/Weilence)  #335 
+- [New] SaveAs 以自订的 CultureInfo 转换 Format cell 值, 感谢[0xced (Cédric Luthi)](https://github.com/0xced) #333
 - [New] SaveAsByTemplate 预设忽略 template 缺少参数 key 错误, OpenXmlConfiguration.IgnoreTemplateParameterMissing 可以开关此卡控. #I4WXFB
+- [New] SaveAsByTemplate 当参数集合为空时会清空模版字串. #I4WM67
 
 ### 1.23.3
 - [Bug] SaveAs CSV 当 value 为 DataTable 时，Key包含双引号Column Name不会显示`"`。 #I4WDA9

docs/README.zh-Hant.md

@@ -18,8 +18,10 @@
 ---
 
 ### 1.24.0
+- [New] Query 支持 strict open xml, 感謝 [Weilence (Lowell)](https://github.com/Weilence)  #335 
+- [New] SaveAs 以自訂的 CultureInfo 轉換 Format cell 值, 感謝[0xced (Cédric Luthi)](https://github.com/0xced) #333
 - [New] SaveAsByTemplate 預設忽略 template 缺少參數 key 錯誤, OpenXmlConfiguration.IgnoreTemplateParameterMissing 可以開關此卡控. #I4WXFB
-
+- [New] SaveAsByTemplate 當參數集合為空時會清空模版字串. #I4WM67
 
 ### 1.23.3
 - [Bug] SaveAs CSV 當 value 為 DataTable 時，Key包含雙引號Column Name不會顯示`"`。 #I4WDA9

samples/xlsx/TestIssueI4WM67.xlsx

@@ -1,7 +1,7 @@
 <Project Sdk="Microsoft.NET.Sdk">
 	<PropertyGroup>
 		<TargetFrameworks>net45;netstandard2.0;net5.0</TargetFrameworks>
-		<Version>1.23.2</Version>
+		<Version>1.24.0</Version>
 	</PropertyGroup>
 	<PropertyGroup>
 		<AssemblyName>MiniExcel</AssemblyName>

src/MiniExcel/MiniExcelLibs.csproj

@@ -526,6 +526,12 @@ private void UpdateDimensionAndGetRowsInfo(Dictionary<string, object> inputMaps,
                             //TODO: check if not contain 1 index
                             //only check first one match IEnumerable, so only render one collection at same row
 
+                            // Empty collection parameter will get exception  https://gitee.com/dotnetchina/MiniExcel/issues/I4WM67
+                            if (xRowInfo.PropsMap == null)
+                            {
+                                v.InnerText = v.InnerText.Replace($"{{{{{propNames[0]}}}}}", propNames[1]);
+                                break;
+                            }
                             // auto check type https://github.com/shps951023/MiniExcel/issues/177
                             var prop = xRowInfo.PropsMap[propNames[1]];
                             var type = prop.UnderlyingTypePropType; //avoid nullable 

src/MiniExcel/OpenXml/ExcelOpenXmlTemplate.Impl.cs

@@ -31,6 +31,26 @@ public MiniExcelIssueTests(ITestOutputHelper output)
             this.output = output;
         }
 
+        [Fact]
+        public void TestIssueI4WM67()
+        {
+            var path = PathHelper.GetTempFilePath();
+            var templatePath = PathHelper.GetFile("xlsx/TestIssueI4WM67.xlsx");
+            var value = new Dictionary<string, object>()
+            {
+                ["users"] = new TestIssueI4WM67Dto[]{ }
+            };
+            MiniExcel.SaveAsByTemplate(path, templatePath, value);
+            var rows = MiniExcel.Query(path).ToList();
+            Assert.Single(rows);
+        }
+
+        public class TestIssueI4WM67Dto
+        {
+            public int ID { get; set; }
+            public string Name { get; set; }
+        }
+
         [Fact]
         public void TestIssueI4WXFB()
         {