webform doc and test

README.md

@@ -326,6 +326,37 @@ using (var stream = File.Create(path))
 }
 ```
 
+#### 5. SaveAs to MemoryStream  [[Try it]](https://dotnetfiddle.net/JOen0e)
+
+```csharp
+using (var stream = new MemoryStream()) //support FileStream,MemoryStream ect.
+{
+    stream.SaveAs(values);
+}
+```
+
+e.g : api of export excel
+
+```csharp
+public IActionResult DownloadExcel()
+{
+    var values = new[] {
+        new { Column1 = "MiniExcel", Column2 = 1 },
+        new { Column1 = "Github", Column2 = 2}
+    };
+
+    var memoryStream = new MemoryStream();
+    memoryStream.SaveAs(values);
+    memoryStream.Seek(0, SeekOrigin.Begin);
+    return new FileStreamResult(memoryStream, "application/vnd.openxmlformats-officedocument.spreadsheetml.sheet")
+    {
+        FileDownloadName = "demo.xlsx"
+    };
+}
+```
+
+
+
 #### 6. Support IDataReader value parameter
 
 ```csharp
@@ -788,6 +819,30 @@ public static IEnumerable<T> Page<T>(IEnumerable<T> en, int pageSize, int page)
 
 ![20210419](https://user-images.githubusercontent.com/12729184/114679083-6ef4c400-9d3e-11eb-9f78-a86daa45fe46.gif)
 
+
+
+#### 4. WebForm export Excel by memorystream
+
+```csharp
+var fileName = "Demo.xlsx";
+var sheetName = "Sheet1";
+HttpResponse response = HttpContext.Current.Response;
+response.Clear();
+response.ContentType = "application/vnd.openxmlformats-officedocument.spreadsheetml.sheet";
+response.AddHeader("Content-Disposition", $"attachment;filename=\"{fileName}\"");
+var values = new[] {
+    new { Column1 = "MiniExcel", Column2 = 1 },
+    new { Column1 = "Github", Column2 = 2}
+};
+var memoryStream = new MemoryStream();
+memoryStream.SaveAs(values, sheetName: sheetName);
+memoryStream.Seek(0, SeekOrigin.Begin);
+memoryStream.CopyTo(Response.OutputStream);
+response.End();
+```
+
+
+
 ### FAQ
 
 #### Q: Excel header title not equal class property name, how to mapping?

README.zh-CN.md

@@ -315,15 +315,35 @@ output :
 | MiniExcel     | 1     |
 | Github     | 2     |
 
-#### 5. SaveAs 支持 Stream [[Try it]](https://dotnetfiddle.net/JOen0e)
+#### 5. SaveAs 支持 Stream，生成文件不落地 [[Try it]](https://dotnetfiddle.net/JOen0e)
 
 ```csharp
-using (var stream = File.Create(path))
+using (var stream = new MemoryStream()) //支持 FileStream,MemoryStream..等
 {
     stream.SaveAs(values);
 }
 ```
 
+像是 API 导出 Excel
+
+```csharp
+public IActionResult DownloadExcel()
+{
+    var values = new[] {
+        new { Column1 = "MiniExcel", Column2 = 1 },
+        new { Column1 = "Github", Column2 = 2}
+    };
+
+    var memoryStream = new MemoryStream();
+    memoryStream.SaveAs(values);
+    memoryStream.Seek(0, SeekOrigin.Begin);
+    return new FileStreamResult(memoryStream, "application/vnd.openxmlformats-officedocument.spreadsheetml.sheet")
+    {
+        FileDownloadName = "demo.xlsx"
+    };
+}
+```
+
 
 
 #### 6. 支持 IDataReader 参数
@@ -649,7 +669,7 @@ using (var connection = new SQLiteConnection(connectionString))
 ![image](https://user-images.githubusercontent.com/12729184/111072579-2dda7b80-8516-11eb-9843-c01a1edc88ec.png)
 
 
-#### 2. ASP.NET Core 3.1 or MVC 5 下载/上传 Excel Xlsx API Demo [Try it](tests/MiniExcel.Tests.AspNetCore)
+#### 2. ASP.NET Core 3.1 下载/上传 Excel Xlsx API Demo [Try it](tests/MiniExcel.Tests.AspNetCore)
 
 ```csharp
 public class ApiController : Controller
@@ -791,6 +811,28 @@ public static IEnumerable<T> Page<T>(IEnumerable<T> en, int pageSize, int page)
 
 ![20210419](https://user-images.githubusercontent.com/12729184/114679083-6ef4c400-9d3e-11eb-9f78-a86daa45fe46.gif)
 
+#### 4. WebForm不落地导出Excel
+
+```csharp
+var fileName = "Demo.xlsx";
+var sheetName = "Sheet1";
+HttpResponse response = HttpContext.Current.Response;
+response.Clear();
+response.ContentType = "application/vnd.openxmlformats-officedocument.spreadsheetml.sheet";
+response.AddHeader("Content-Disposition", $"attachment;filename=\"{fileName}\"");
+var values = new[] {
+    new { Column1 = "MiniExcel", Column2 = 1 },
+    new { Column1 = "Github", Column2 = 2}
+};
+var memoryStream = new MemoryStream();
+memoryStream.SaveAs(values, sheetName: sheetName);
+memoryStream.Seek(0, SeekOrigin.Begin);
+memoryStream.CopyTo(Response.OutputStream);
+response.End();
+```
+
+
+
 
 
 ### FAQ 常见问题

README.zh-Hant.md

@@ -317,15 +317,35 @@ output :
 | MiniExcel     | 1     |
 | Github     | 2     |
 
-#### 5. SaveAs 支援 Stream [[Try it]](https://dotnetfiddle.net/JOen0e)
+#### 5. SaveAs 支持 Stream，生成文件不落地 [[Try it]](https://dotnetfiddle.net/JOen0e)
 
 ```csharp
-using (var stream = File.Create(path))
+using (var stream = new MemoryStream()) //支持 FileStream,MemoryStream..等
 {
     stream.SaveAs(values);
 }
 ```
 
+像是 API 導出 Excel
+
+```csharp
+public IActionResult DownloadExcel()
+{
+    var values = new[] {
+        new { Column1 = "MiniExcel", Column2 = 1 },
+        new { Column1 = "Github", Column2 = 2}
+    };
+
+    var memoryStream = new MemoryStream();
+    memoryStream.SaveAs(values);
+    memoryStream.Seek(0, SeekOrigin.Begin);
+    return new FileStreamResult(memoryStream, "application/vnd.openxmlformats-officedocument.spreadsheetml.sheet")
+    {
+        FileDownloadName = "demo.xlsx"
+    };
+}
+```
+
 #### 6. 支持 IDataReader 參數
 
 ```csharp
@@ -790,7 +810,25 @@ public static IEnumerable<T> Page<T>(IEnumerable<T> en, int pageSize, int page)
 
 ![20210419](https://user-images.githubusercontent.com/12729184/114679083-6ef4c400-9d3e-11eb-9f78-a86daa45fe46.gif)
 
+#### 4. WebForm不落地導出Excel
 
+```csharp
+var fileName = "Demo.xlsx";
+var sheetName = "Sheet1";
+HttpResponse response = HttpContext.Current.Response;
+response.Clear();
+response.ContentType = "application/vnd.openxmlformats-officedocument.spreadsheetml.sheet";
+response.AddHeader("Content-Disposition", $"attachment;filename=\"{fileName}\"");
+var values = new[] {
+    new { Column1 = "MiniExcel", Column2 = 1 },
+    new { Column1 = "Github", Column2 = 2}
+};
+var memoryStream = new MemoryStream();
+memoryStream.SaveAs(values, sheetName: sheetName);
+memoryStream.Seek(0, SeekOrigin.Begin);
+memoryStream.CopyTo(Response.OutputStream);
+response.End();
+```
 
 ### FAQ 常見問題
 

tests/MiniExcel.Tests.WebForm/WebFormTest/TestIssue223.aspx

@@ -12,6 +12,8 @@
             <asp:GridView ID="GridView1" runat="server" OnSelectedIndexChanged="GridView1_SelectedIndexChanged">
             </asp:GridView>
         </div>
+        <asp:Button ID="Button1" runat="server" OnClick="Button1_Click" Text="Download Excel" />
+        <asp:Button ID="Button2" runat="server" OnClick="Button2_Click" Text="GridViewBind" />
     </form>
 </body>
 </html>

tests/MiniExcel.Tests.WebForm/WebFormTest/TestIssue223.aspx.cs

@@ -1,6 +1,8 @@
-using System;
+using MiniExcelLibs;
+using System;
 using System.Collections.Generic;
 using System.Data;
+using System.IO;
 using System.Linq;
 using System.Web;
 using System.Web.UI;
@@ -12,15 +14,40 @@ namespace WebFormTest
     {
         protected void Page_Load(object sender, EventArgs e)
         {
-            var path = HttpContext.Current.ApplicationInstance.Server.MapPath("~/TestIssue223.xlsx");
-            var dt = MiniExcelLibs.MiniExcel.QueryAsDataTable(path);
-            this.GridView1.DataSource = dt;
-            this.GridView1.DataBind();
+
         }
 
         protected void GridView1_SelectedIndexChanged(object sender, EventArgs e)
         {
 
         }
+
+        protected void Button1_Click(object sender, EventArgs e)
+        {
+            var fileName = "Demo.xlsx";
+            var sheetName = "Sheet1";
+            HttpResponse response = HttpContext.Current.Response;
+            response.Clear();
+            response.ContentType = "application/vnd.openxmlformats-officedocument.spreadsheetml.sheet";
+            response.AddHeader("Content-Disposition", $"attachment;filename=\"{fileName}\"");
+            var values = new[] {
+                new { Column1 = "MiniExcel", Column2 = 1 },
+                new { Column1 = "Github", Column2 = 2}
+            };
+            var memoryStream = new MemoryStream();
+            memoryStream.SaveAs(values, sheetName: sheetName);
+            memoryStream.Seek(0, SeekOrigin.Begin);
+            memoryStream.CopyTo(Response.OutputStream);
+            response.End();
+        }
+
+
+        protected void Button2_Click(object sender, EventArgs e)
+        {
+            var path = HttpContext.Current.ApplicationInstance.Server.MapPath("~/TestIssue223.xlsx");
+            var dt = MiniExcelLibs.MiniExcel.QueryAsDataTable(path);
+            this.GridView1.DataSource = dt;
+            this.GridView1.DataBind();
+        }
     }
 }

tests/MiniExcel.Tests.WebForm/WebFormTest/TestIssue223.aspx.designer.cs

@@ -31,5 +31,23 @@ namespace WebFormTest
         /// To modify move field declaration from designer file to code-behind file.
         /// </remarks>
         protected global::System.Web.UI.WebControls.GridView GridView1;
+
+        /// <summary>
+        /// Button1 control.
+        /// </summary>
+        /// <remarks>
+        /// Auto-generated field.
+        /// To modify move field declaration from designer file to code-behind file.
+        /// </remarks>
+        protected global::System.Web.UI.WebControls.Button Button1;
+
+        /// <summary>
+        /// Button2 control.
+        /// </summary>
+        /// <remarks>
+        /// Auto-generated field.
+        /// To modify move field declaration from designer file to code-behind file.
+        /// </remarks>
+        protected global::System.Web.UI.WebControls.Button Button2;
     }
 }