我试图绑定一个html选择,我为此编写了一个webmethod,它返回一个列表。我如何使用此返回值来使用jquery绑定我的选择控件....?我被困了......代码附在此处:
function columnDropdownScript() {
var reqTableNameParameter = "Designation"; //$('#ddlTableNames').text;
var requestTableParameters = '{' +
'selTableName:"' + reqTableNameParameter + '"}';
// Configure AJAX call to server
$.ajax({
type: "POST",
url: "Webtop.aspx/FillColumnDropdown",
data: requestTableParameters,
contentType: "application/json; charset=utf-8",
dataType: "json",
success: DisplayColumnNames, //Event that'll be fired on Success
error: DisplayError //Event that'll be fired on Error
});
}
function DisplayColumnNames(serverResponse) {
$("#ddlColumnNames").get(0).options.length = 0;
$("#ddlColumnNames").get(0).options[0] = new Option("Select", "-1");
$.each(serverResponse.d, function(index, item) {
$("#ddlColumnNames").get(0).options[$("#ddlColumnNames").get(0).options.length] = new Option(item.Display, item.Value);
});
alert('Check Column DropDown');
}
[WebMethod]
public static List<string> FillColumnDropdown(string selTableName)
{
int x=1;
string selectedTable = selTableName;
List<string> columnsToBind = new List<string>();
foreach (Columns column in Metadata.columnsOfSelectedTables)
{
if (column.TableName.Equals(selectedTable))
{
columnsToBind.Add(column.ColumnName);
}
}
return columnsToBind;
}
答案 0 :(得分:2)
//我没有测试过这个问题,但是从我的头脑中开始,这应该可以解决问题 //(注意,这会附加到列表中。如果多次调用,您可能需要清除)
$.ajax({
type: "POST",
url: "Webtop.aspx/FillColumnDropdown",
data: requestTableParameters,
//contentType: "plain/text",
contentType: "application/json; charset=utf-8",
dataType: "json",
success: function(msg) {
for (var i = 0, l = msg.length; i < l; i++) {
$("#the_selectbox").append("<option>" + msg.d[i] + "</option>");
}
},
error: DisplayError //Event that'll be fired on Error
});
答案 1 :(得分:0)
只是出于好奇,你为什么要为它做一个web方法而不是添加onload / postback触发器?
你在哪里将你的列表投射到代码背后的json?难道它的返回类型不是xml吗?
无论如何,jQuery对象属性要求匿名函数:
$.ajax({
// ...
success:function(serverResponse){
//success code
},
error:function(serverResponse){
//error code
},
});