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Using ASP.NET Core in JavaScript DocumentEditor control

29 Jul 2021 / 2 minutes to read

DocumentEditor depends on server side interaction for below listed operations can be written in ASP.NET Core using Syncfusion.EJ2.WordEditor.AspNet.Core.

  • Import Word Document
  • Paste with formatting
  • Restrict Editing
  • Spell Check

This section explains how to create the service for DocumentEditor in ASP.NET Core.

Importing Word Document

Word documents can be imported to DocumentEditor using the below code snippet.

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[AcceptVerbs("Post")]
[HttpPost]
[EnableCors("AllowAllOrigins")]
[Route("Import")]
public string Import(IFormCollection data)
{
if (data.Files.Count == 0)
    return null;
Stream stream = new MemoryStream();
IFormFile file = data.Files[0];
int index = file.FileName.LastIndexOf('.');
string type = index > -1 && index < file.FileName.Length - 1 ?
    file.FileName.Substring(index) : ".docx";
file.CopyTo(stream);
stream.Position = 0;

WordDocument document = WordDocument.Load(stream, GetFormatType(type.ToLower()));
string json = Newtonsoft.Json.JsonConvert.SerializeObject(document);
document.Dispose();
return json;
}

Paste with formatting

Paste with formatting action is defined in the below code snippet.

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[AcceptVerbs("Post")]
[HttpPost]
[EnableCors("AllowAllOrigins")]
[Route("SystemClipboard")]
public string SystemClipboard([FromBody]CustomParameter param)
{
if (param.content != null && param.content != "")
{
    try
    {
        WordDocument document = WordDocument.LoadString(param.content, GetFormatType(param.type.ToLower()));
        string json = Newtonsoft.Json.JsonConvert.SerializeObject(document);
        document.Dispose();
        return json;
    }
    catch (Exception)
    {
        return "";
    }
}
return "";
}

public class CustomParameter
{
public string content { get; set; }
public string type { get; set; }
}

Restrict editing

Restrict editing action is defined in the below code snippet.

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[AcceptVerbs("Post")]
[HttpPost]
[EnableCors("AllowAllOrigins")]
[Route("RestrictEditing")]
public string[] RestrictEditing([FromBody]CustomRestrictParameter param)
{
if (param.passwordBase64 == "" && param.passwordBase64 == null)
    return null;
return WordDocument.ComputeHash(param.passwordBase64, param.saltBase64, param.spinCount);
}

public class CustomRestrictParameter
{
public string passwordBase64 { get; set; }
public string saltBase64 { get; set; }
public int spinCount { get; set; }
}

Spell Check

Spell check action is defined in the below code snippet.

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[AcceptVerbs("Post")]
[HttpPost]
[EnableCors("AllowAllOrigins")]
[Route("SpellCheck")]
public string SpellCheck([FromBody] SpellCheckJsonData spellChecker)
{
try
{
    SpellChecker spellCheck = new SpellChecker(spellDictionary);
    spellCheck.GetSuggestions(spellChecker.LanguageID, spellChecker.TexttoCheck, spellChecker.CheckSpelling, spellChecker.CheckSuggestion, spellChecker.AddWord);
    return Newtonsoft.Json.JsonConvert.SerializeObject(spellCheck);
}
catch
{
    return "{\"SpellCollection\":[],\"HasSpellingError\":false,\"Suggestions\":null}";
}
}

[AcceptVerbs("Post")]
[HttpPost]
[EnableCors("AllowAllOrigins")]
[Route("SpellCheckByPage")]
public string SpellCheckByPage([FromBody] SpellCheckJsonData spellChecker)
{
try
{
    SpellChecker spellCheck = new SpellChecker(spellDictionary);
    spellCheck.CheckSpelling(spellChecker.LanguageID, spellChecker.TexttoCheck);
    return Newtonsoft.Json.JsonConvert.SerializeObject(spellCheck);
}
catch
{
    return "{\"SpellCollection\":[],\"HasSpellingError\":false,\"Suggestions\":null}";
}
}

public class SpellCheckJsonData
{
public int LanguageID { get; set; }
public string TexttoCheck { get; set; }
public bool CheckSpelling { get; set; }
public bool CheckSuggestion { get; set; }
public bool AddWord { get; set; }

}

Note: Please refer the ASP.NET Core Web API sample.

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