c# - 当客户端使用 JSON 填充 Dropdown 时，添加 C# asp.net

Question

我继承了我在 Json 中的代码

function OnGetNotes(index) {
        proxyNotes.invoke("SearchBranchesByBankID",{ "request":{"BankID": index}
                            }, OnGetNotesComplete, OnError);
    }
    function OnGetNotesComplete(result) {
        var obj = jQuery.parseJSON(result);
        var notes = obj.Branches;
        if (notes.length > 0) {
            for (var i = 0; i < notes.length; i++) {
                var item = notes[i]; 
                $("#<%=cboBranch.ClientID%>").append($("<option></option>").val(notes[i].ID).html(notes[i].BranchName));                                    
            }

这是我的 c# 中的代码，当我按下添加按钮时，我无法访问分支下拉列表的选定值

protected void btnSaveBank_Click(object sender, EventArgs e)
    {
        if (int.Parse(cboBank.SelectedValue) != -1)
        {
            int bankID = int.Parse(cboBank.SelectedValue);
            string bankName = cboBank.SelectedItem.Text;
            int branchID = int.Parse(cboBranch.SelectedValue);//this have no value at all
            string branchName = cboBranch.SelectedItem.Text;//and also this
            string accName = txtAccountName.Text;
            string accNo = txtAccountNumber.Text;
            DateTime tdate = UtilityHelper.ConvertToDateTime(txtToDateBank.Text);
            DateTime fdate = UtilityHelper.ConvertToDateTime(txtFromDateBank.Text);

            AddContractorBankAccountDetails(bankID, bankName, 1, "branch one", accName, accNo, tdate, fdate);
        }
        else
        {
            alertBoxBank.Visible = true;
        }
    }

感谢您

Answer 1

 int bankID = int.Parse(cboBank.SelectedValue.toString());

最后使用 toString ....或者你也可以这样做

int bankID = int.Parse(cboBank.SelectedItem.toString());

这将取决于您的项目价值..