DATATable转为json

public static string DataTableToJson(DataTable dt)

{

StringBuilder jsonBuilder = new StringBuilder();

jsonBuilder.Append("{\"");

jsonBuilder.Append(dt.TableName);

jsonBuilder.Append("\":[");

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