DataTable转JSON

 

#region dataTable转换成Json格式    
/// <summary>      
/// dataTable转换成Json格式      
/// </summary>      
/// <param name="dt"></param>      
/// <returns></returns>      
public static string ToJson(DataTable dt)    
{    
    StringBuilder jsonBuilder = new StringBuilder();    
    jsonBuilder.Append("{\"");    
    jsonBuilder.Append(dt.TableName.ToString());    
    jsonBuilder.Append("\":[");    
    for (int i = 0; i < dt.Rows.Count; i++)    
    {    
        jsonBuilder.Append("{");    
        for (int j = 0; j < dt.Columns.Count; j++)    
        {    
            jsonBuilder.Append("\"");    
            jsonBuilder.Append(dt.Columns[j].ColumnName);    
            jsonBuilder.Append("\":\"");    
            jsonBuilder.Append(dt.Rows[i][j].ToString());    
            jsonBuilder.Append("\",");    
        }    
        jsonBuilder.Remove(jsonBuilder.Length - 1, 1);    
        jsonBuilder.Append("},");    
    }    
    jsonBuilder.Remove(jsonBuilder.Length - 1, 1);    
    jsonBuilder.Append("]");    
    jsonBuilder.Append("}");    
    return jsonBuilder.ToString();    
}   
  
#endregion dataTable转换成Json格式   
  
#region DataSet转换成Json格式    
/// <summary>      
/// DataSet转换成Json格式      
/// </summary>      
/// <param name="ds">DataSet</param>      
/// <returns></returns>      
public static string ToJson(DataSet ds)    
{    
    StringBuilder json = new StringBuilder();    
   
    foreach (DataTable dt in ds.Tables)    
    {    
        json.Append("{\"");    
        json.Append(dt.TableName);    
        json.Append("\":");    
        json.Append(ToJson(dt));    
        json.Append("}");    
    }    
    return json.ToString();    
}   
#endregion