# Merge Multiple Excel Files Present in Storage
## Content
This section demonstrates how to call the Web API service through a client application and merge multiple excel files available in file storage (remote storage or storage at the same server) to workbook.
[Step 1: Call the Service](/componentone/docs/webapi/online-webapi/Services/ExcelServices/MergeExcelService/GETMergeExcel#step-1-call-the-service)
[Step 2: Run the Client Project](/componentone/docs/webapi/online-webapi/Services/ExcelServices/MergeExcelService/GETMergeExcel#step-2-run-the-client-project)
The following example makes a call to the Web API [service](/componentone/docs/webapi/online-webapi/overview/WorkingwithC1WebAPI/ConfiguringWebAPI) through HTML as well as WinForms client applications. These clients send a GET request to the service, which returns a response stream. This response stream is then saved in the desired excel file format.
In the following example, the service URL takes name and location of excel data files (present in [storage](/componentone/docs/webapi/online-webapi/overview/WorkingwithC1WebAPI/ConfiguringWebAPI/Configuring.NETCollections)) to merge in **FileNamesToMerge** parameter and the desired file format, xls, in **Type** parameter. The specified excel files to merge, reside in root folder of the hosted service.
### Step 1: Call the Service
Complete the following steps to call the Web API service.
**csharp**
```csharp
public void MergeExcel() {
var apiURL = "https://developer.mescius.com/componentone/demos/aspnet/c1WebAPI/latest/api/excel/merge?
FileName=excel&type=xls&FileNamesToMerge=root%%2FHouston.xlsx";
WebRequest request = WebRequest.Create(apiURL);
WebResponse response = request.GetResponse();
var fileStream = File.Create("D:\\MergedFile.xls");
response.GetResponseStream().CopyTo(fileStream);
}
```
**HTML**
1\. Create an HTML application\, as discussed in [Configure Client for REST API service](/componentone/docs/webapi/online-webapi/overview/WorkingwithC1WebAPI/configuring-the-client-application/ClientAppRESTApiServices).
2. Add the following markups in the \
```
Note that, for GET request we set **method** attribute of \