[英]DropDownList not firing OnSelectedIndexChanged
ASP.Net code: ASP.Net代码:
<asp:DropDownList ID="ddlKid" runat="server" AutoPostBack="true" CssClass="ddlReports"
Width="160px" OnSelectedIndexChanged="ddlKid_SelectedIndexChanged">
</asp:DropDownList>
C# code: C#代码:
protected void ddlKid_SelectedIndexChanged(object sender, EventArgs e)
{
int i = ddlKid.SelectedIndex;
count = i;
int KidId = int.Parse(KidArray[i].ToString());
ArrayList ADA = new ArrayList();
ADA.Add(FirstAssignment.SelectedItem);
ADA.Add(SecondAssignment.SelectedItem);
DrawTableNew(ADA, KidId);
}
protected void Page_Load(object sender, EventArgs e)
{
GameLib.Reports.ReportID = 6;
if (!IsPostBack)
{
FillGrades();
FillKids();
count = 0;
Label1.Visible = false;
FirstAssignment.Visible = false;
SecondAssignment.Visible = false;
L1st.Visible = false;
L2nd.Visible = false;
Header.Visible = false;
Label2.Visible = false;
Div2.Visible = false;
Panel1.Visible = false;
DwdTable.Visible = false;
DwdButton2.Visible = false;
pnlIssues.Visible = false;
Panel2.Visible = false;
}
else
{
FillGrades();
// FillKids();
}
}
protected void FillKids()
{
ddlKid.Visible = true;
try
{
if (GameUser.UserType == 1)
{
ddlKid.Items.Insert(0, new System.Web.UI.WebControls.ListItem(GameUser.UserName, GameUser.UserID.ToString()));
}
else
{
DataTable dt = new DataTable();
//dt = GameLib.GameUser.GetKidsForParent(GameUser.UserID);
dt = GameLib.GameUser.GetKidsForParentAsPerGrade(GameUser.UserID, ddlAssessment.SelectedItem.ToString());
for (int i = 0; i < dt.Rows.Count; i++)
{
int kidId = (int)dt.Rows[i]["intUserID"];
KidArray.Add(kidId);
}
if (dt.Rows.Count <= 0)
{
//MPEGrade.Show();
}
else
{
ddlKid.DataSource = dt;
ddlKid.DataTextField = "vchLoginName";
ddlKid.DataValueField = "vchGradeName";
ddlKid.DataBind();
}
}
}
catch
{
}
}
The problem is my ddlKid_SelectedIndexChanged
is not executing. 问题是我的
ddlKid_SelectedIndexChanged
没有执行。 After page load it stops at else
statement. 页面加载后,它将在
else
语句处停止。 Its code for fill kids(Adding drop down data). 它的代码用于填充孩子(添加下拉数据)。 The fill kid only called on the first that is !postback.
填充孩子仅在第一个调用!postback时才调用。
you can change binding value: fill kids value like: 您可以更改绑定值:填充孩子的值,例如:
string vchLoginName=//login name from db;
string vchGradeName=//Grade name from db;
ddlKid.Items.Add(new ListItem(vchLoginName,vchGradeName));
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