asp.net使用DataTable构造Json字符串的方法

/// <summary>
/// 将datatable转换为json
/// </summary>
/// <param name="dtb"></param>
/// <returns></returns>
private string Dtb2Json(DataTable dtb) {
 JavaScriptSerializer jss = new JavaScriptSerializer();
 System.Collections.ArrayList dic = new System.Collections.ArrayList();
 foreach (DataRow dr in dtb.Rows)
 {
 System.Collections.Generic.Dictionary<string, object> drow = new System.Collections.Generic.Dictionary<string, object>();
 foreach (DataColumn dc in dtb.Columns)
 {
 drow.Add(dc.ColumnName, dr[dc.ColumnName]);
 }
 dic.Add(drow);
 }
 //序列化
 return jss.Serialize(dic);
} /// <summary>
/// 构建JSON字符串
/// </summary>
/// <param name="dt"></param>
/// <returns></returns>
public static string CreateJsonParameters(DataTable dt)
{
 System.Text.StringBuilder sb = new System.Text.StringBuilder();
 if (dt != null && dt.Rows.Count > 0)
 {
 sb.Append("[");
 for (int i = 0; i < dt.Rows.Count; i++)
 {
 sb.Append("{");
 for (int j = 0; j < dt.Columns.Count; j++)
 {
 //如果值不是最后一个则添加逗号分隔
 if (j < dt.Columns.Count - 1)
 {
 sb.Append("/"" + dt.Columns[j].ColumnName.ToString() + "/":" + "/"" + dt.Rows[i][j].ToString() + "/",");
 }
 //如果值为最后个字符则不添加逗号
 else if (j == dt.Columns.Count - 1)
 {
 sb.Append("/"" + dt.Columns[j].ColumnName.ToString() + "/":" + "/"" + dt.Rows[i][j].ToString() + "/"");
 }
 }
 //如果为最后一个值的话 则不添加逗号
 if (i == dt.Rows.Count - 1)
 {
 sb.Append("}");
 }
 else
 {
 sb.Append("},");
 }
 }
 sb.Append("]");
 return sb.ToString();
 }
 else { return null; }
}