ajax

$.ajax({
type: “Post”,
url: “XXX.aspx/getXXXList”,
data: “{‘para1’: '” + para1 + “’,” +
“‘para2’: '” + para2 +
“’}”,
contentType: “application/json;charset=utf-8”,
dataType: “json”,
success: function (data) {

                var rsStr = data.d;

                // チェックエラーの場合
                if (rsStr.substr(0, 4) == ("エラー:")) {
                    var errArr = rsStr.split(":");
                    showMessageDialog(errArr[1], errArr[0]);
                    document.getElementById("content_contentFooter_footer_message").innerText = ""
                    return;
                }

                data = jQuery.parseJSON(rsStr);

});

XXX.cs
public static string getXXXList(){
　　　　// DataTableToJSON
return DataTableToJSON(searchSentenceDataTable);
}