You signed in with another tab or window. Reload to refresh your session.You signed out in another tab or window. Reload to refresh your session.You switched accounts on another tab or window. Reload to refresh your session.Dismiss alert
I want to change the default field delimiter when exporting the Grid to CSV file. How to set a different list separator?
26
27
27
28
I want to use a semicolon field delimiter for the exported CSV Grid instead of comma. How to achieve this?
28
29
29
-
>tip At the time of writing (**UI for Blazor 3.5.0**), the Blazor Grid [does not expose a built-in option for configuring the field delimiter](https://feedback.telerik.com/blazor/1577167-option-to-configure-the-field-delimiter-when-exporting-to-csv). You may vote for the enhancement and follow it to receive status updates.
30
+
>tip The Blazor Grid [does not expose a built-in option for setting the CSV delimiter](https://feedback.telerik.com/blazor/1577167-option-to-configure-the-field-delimiter-when-exporting-to-csv). You can vote for the enhancement and follow it to receive status updates. It depends on a [feature of RadSpreadProcessing](https://feedback.telerik.com/document-processing/1356286-spreadstreamprocessing-implement-settings-for-changing-the-delimiter-and-quote-when-exporting-to-csv).
30
31
31
32
## Solution
32
33
33
-
A possible option is to manually modify the exported CSV file before it reaches the client to change the field delimiter.
34
-
35
-
For that purpose use the [`RadSpreadProcessing`](https://docs.telerik.com/devtools/document-processing/libraries/radspreadprocessing/overview) library - it allows you to create spreadsheets from scratch, modify existing documents or convert between the most common spreadsheet formats. In this case, we will focus on the [`CsvFormatProvider` which exposes setting to configure the field delimiter](https://docs.telerik.com/devtools/document-processing/libraries/radspreadprocessing/formats-and-conversion/csv/settings).
36
-
37
-
To change the field delimiter, do the following:
38
-
39
-
1. Install `Telerik.Documents.Spreadsheet.FormatProviders.Xls` package, so you can use the `CsvFormatProvider`
40
-
41
-
1. Handle the [OnAfterExport](slug:grid-export-events#onafterexport) event of the Grid. The stream it provides is finalized, so that the resource does not leak. Its binary data, however, is available, so you can copy the stream bytes to a new `MemoryStream` instance.
34
+
Modify the exported CSV file before it reaches the user to change the field delimiter.
42
35
43
-
1. Create a `CsvFormatProvider` instance and use it to [import the new `MemoryStream` in a `workbook`](https://docs.telerik.com/devtools/document-processing/libraries/radspreadprocessing/formats-and-conversion/csv/csvformatprovider#import).
36
+
Use the [`RadSpreadProcessing`](https://docs.telerik.com/devtools/document-processing/libraries/radspreadprocessing/overview) library. It allows you to create spreadsheets from scratch, modify existing documents or convert between the most common spreadsheet formats. In this case, we will focus on the [`CsvFormatProvider` which exposes setting to configure the field delimiter](https://docs.telerik.com/devtools/document-processing/libraries/radspreadprocessing/formats-and-conversion/csv/settings).
44
37
45
-
1. Set the desired `Delimiter` through the [settings of the `CsvFormatProvider` instance](https://docs.telerik.com/devtools/document-processing/libraries/radspreadprocessing/formats-and-conversion/csv/settings)
38
+
To change the CSV value delimiter:
46
39
47
-
1.[Export the modified `workbook` to a `MemoryStream`](https://docs.telerik.com/devtools/document-processing/knowledge-base/import-export-save-load-workbook#save-workbook-to-filestream-or-memorystream).
48
-
49
-
1.Pass that `MemoryStream` to the `args.Stream` of the `GridAfterCsvExportEventArgs`, so that the modifications can be saved to the actual exported file.
50
-
51
-
<divclass="skip-repl"></div>
52
-
````RAZOR
53
-
@*Customize the field delimiter of the exported CSV file*@
40
+
1.Install the `Telerik.Documents.Spreadsheet.FormatProviders.Xls` NuGet package, so you can use the `CsvFormatProvider`.
41
+
1. Handle the [Grid `OnAfterExport` event](slug:grid-export-events#onafterexport). The `Stream` it provides is finalized, so that the resource does not leak. Its binary data, however, is available, so you can copy the stream bytes to a new `MemoryStream` instance.
42
+
1.Create a `CsvFormatProvider` and [set its `Delimiter` setting to a comma `','`](https://docs.telerik.com/devtools/document-processing/libraries/radspreadprocessing/formats-and-conversion/csv/settings). This is necessary because the delimiter in the exported CSV file is always a comma, while the `CsvFormatProvider` assumes it based on the culture.
43
+
1.[Import the new `MemoryStream` to a `Workbook`](https://docs.telerik.com/devtools/document-processing/libraries/radspreadprocessing/formats-and-conversion/csv/csvformatprovider#import).
44
+
1. Set the desired new `Delimiter` through the [settings of the `CsvFormatProvider` instance](https://docs.telerik.com/devtools/document-processing/libraries/radspreadprocessing/formats-and-conversion/csv/settings).
45
+
1.[Export the modified `Workbook` to a new `MemoryStream`](https://docs.telerik.com/devtools/document-processing/knowledge-base/import-export-save-load-workbook#save-workbook-to-filestream-or-memorystream).
46
+
1. Pass that `MemoryStream` to the `Stream` property of the `GridAfterCsvExportEventArgs`, so that the modifications can be saved to the actual exported file.
//args.Stream is finalized. The Import() method of the CSVFormatProvider requires a readable stream, so you should copy the stream bytes to a new MemoryStream instance which will be used for the import.
89
-
var bytes = args.Stream.ToArray();
83
+
//args.Stream is finalized. The Import() method of the CSVFormatProvider requires a readable stream,
84
+
//so you should copy the stream bytes to a new MemoryStream for the import.
85
+
using MemoryStream importCsvStream = new MemoryStream(args.Stream.ToArray());
90
86
91
-
var CSVStream = new MemoryStream(bytes);
92
-
93
-
//create a format provider instance to call the import
87
+
//Create a CSV format provider that imports and exports the CSV file.
94
88
CsvFormatProvider formatProvider = new CsvFormatProvider();
95
89
96
-
//import the stream to a workbook
97
-
Workbook workbook = formatProvider.Import(CSVStream, new TimeSpan(0, 0, 5));
90
+
//The delimiter in the exported CSV file is always a comma,
91
+
//while the CsvFormatProvider assumes it based on the culture.
92
+
//Set the delimiter explicitly to avoid mismatch.
93
+
formatProvider.Settings.Delimiter = ',';
94
+
95
+
//Import the stream to a Telerik Workbook
96
+
Workbook workbook = formatProvider.Import(importCsvStream, new TimeSpan(0, 0, 5));
98
97
99
-
//create a new MemoryStream to export the modified workbook in
100
-
MemoryStream modifiedExport = new MemoryStream();
98
+
//Create a new MemoryStream to export the modified Workbook.
99
+
using MemoryStream exportCsvStream = new MemoryStream();
101
100
102
-
//set the desired delimiter
101
+
//Set the desired new CSV delimiter.
103
102
formatProvider.Settings.Delimiter = ';';
104
103
105
-
//export the modified workbook to a stream
106
-
formatProvider.Export(workbook, modifiedExport);
104
+
//Export the modified Workbook.
105
+
formatProvider.Export(workbook, exportCsvStream, new TimeSpan(0, 0, 5));
107
106
108
-
//pass the modified stream to the event arguments
109
-
args.Stream = modifiedExport;
107
+
//Pass the modified Stream to the OnAfterExport event argument.
108
+
args.Stream = exportCsvStream;
110
109
}
111
110
112
-
private List<SampleData> GridData { get; set; }
111
+
private List<Product>? GridData { get; set; }
113
112
114
113
private bool ExportAllPages { get; set; }
115
114
116
115
protected override void OnInitialized()
117
116
{
118
-
GridData = Enumerable.Range(1, 100).Select(x => new SampleData
119
-
{
120
-
ProductId = x,
121
-
ProductName = $"Product {x}",
122
-
UnitsInStock = x * 2,
123
-
Price = 3.14159m * x,
124
-
Discontinued = x % 4 == 0,
125
-
FirstReleaseDate = DateTime.Now.AddDays(-x)
126
-
}).ToList();
117
+
GridData = Enumerable.Range(1, 100).Select(x => new Product
118
+
{
119
+
Id = x,
120
+
Name = $"Product {x}",
121
+
Quantity = x * 2,
122
+
Price = 3.14159m * x,
123
+
Discontinued = x % 4 == 0,
124
+
ReleaseDate = DateTime.Now.AddDays(-x)
125
+
}).ToList();
127
126
}
128
127
129
-
public class SampleData
128
+
public class Product
130
129
{
131
-
public int ProductId { get; set; }
132
-
public string ProductName { get; set; }
133
-
public int UnitsInStock { get; set; }
134
-
public decimal Price { get; set; }
130
+
public int Id { get; set; }
131
+
public string Name { get; set; } = string.Empty;
132
+
public decimal? Price { get; set; }
133
+
public int Quantity { get; set; }
135
134
public bool Discontinued { get; set; }
136
-
public DateTime FirstReleaseDate { get; set; }
135
+
public DateTime ReleaseDate { get; set; }
137
136
}
138
137
}
139
138
````
140
139
141
140
## See Also
142
141
143
-
*[Format numbers and dates in the exported CSV file from the Grid](slug:grid-kb-number-formatting-of-the-csv-export)
144
-
*[Custom cell formatting of the exported file with RadSpreadProcessing](slug:grid-kb-custom-cell-formatting-with-radspreadprocessing)
0 commit comments