我如何在提交表单后清除(重置)表单域
protected void lb_insert_Click(object sender, EventArgs e)
{
try
{
FormView _f = FormView1;
usercredential uc = UserHandler.GetUserCredential(UserHandler.GetUserNameAD());
int id_spv = int.Parse(uc.usrID); int? code_section = int.Parse(uc.usrSectionId);
if (((CheckBox)_f.Controls[0].FindControl("other_spv")).Checked)
{
id_spv = int.Parse(((HiddenField)_f.Controls[0].FindControl("hid_other_spv_id")).Value);
code_section = int.Parse(dbcontext.tbl_ref_UserHzr
.Where(p => p.code_hzrUser == id_spv)
.Select(r => r.code_section)
.First().ToString());
//code_section = dbcontext.tbl_ref_UserHzr.Where(x => x.code_hzrUser == id_spv).Select(x => x.code_section).SingleOrDefault();
}
#region <insert new hazard report to tbl_hzr_main />
tbl_hzr_main newitem = new tbl_hzr_main();
newitem.code_company = int.Parse(((CustomControls_DdlCompany)_f.Controls[0].FindControl("ddl_company1")).SelectedValue);
newitem.code_empPIC = int.Parse(((HiddenField)_f.Controls[0].FindControl("hid_pic_id")).Value);
newitem.code_hzrUser = id_spv;
newitem.code_incdLocation = int.Parse(((CustomControls_DdlLocation)_f.Controls[0].FindControl("ddl_location1")).SelectedValue);
newitem.code_main_contractor = int.Parse(((CustomControls_DdlCompany)_f.Controls[0].FindControl("ddl_company1")).SelectedMainConValue);
newitem.code_section = code_section;
newitem.code_usrEntry = int.Parse(uc.usrID);
newitem.date_hzrMain = DateTime.Parse(((TextBox)_f.Controls[0].FindControl("TextBox1")).Text);
newitem.desc_hzrMain = ((TextBox)_f.Controls[0].FindControl("TextBox3")).Text;
newitem.dueDate_hzrMain = DateTime.Parse(((TextBox)_f.Controls[0].FindControl("TextBox1")).Text);
newitem.entryDate_hzrMain = DateTime.Now;
newitem.folup_hzrMain = ((TextBox)_f.Controls[0].FindControl("TextBox4")).Text;
newitem.locDetail_hzrMain = ((TextBox)_f.Controls[0].FindControl("txb_loc_detail")).Text;
newitem.PICsign_status = byte.Parse(((RadioButtonList)_f.Controls[0].FindControl("rbl_sign_pic")).SelectedValue);
newitem.stat_hzrMain = byte.Parse(((RadioButtonList)_f.Controls[0].FindControl("RadioButtonList1")).SelectedValue);
dbcontext.tbl_hzr_main.Add(newitem);
dbcontext.SaveChanges();
#endregion
#region <get latest hazard report ID for foreign key />
long id_hazard_report = long.Parse(dbcontext.tbl_hzr_main
.OrderByDescending(o => o.code_hzrMain)
.Select(s => s.code_hzrMain)
.First().ToString());
//long id_hazard_report = dbcontext.tbl_hzr_main.OrderByDescending(p => p.code_hzrMain).Select(x => x.code_hzrMain).SingleOrDefault();
#endregion
#region <insert finding type/criteria />
tbl_hzrCriteria newcrititem = new tbl_hzrCriteria();
//RadioButtonList rbl_crit = (RadioButtonList)_f.Controls[0].FindControl("rbl_finding_type");
//foreach (ListItem rb in rbl_crit.Items)
//{
// if (rb.Selected)
// {
// newcrititem.code_hzrCritItem = int.Parse(rb.Value);
// }
//}
newcrititem.code_hzrCritItem = int.Parse(((RadioButtonList)_f.Controls[0].FindControl("rbl_finding_type")).SelectedValue);
newcrititem.code_hzrMain = id_hazard_report;
dbcontext.tbl_hzrCriteria.Add(newcrititem);
dbcontext.SaveChanges();
#endregion
#region <insert risk level if location kelanis />
if (((CustomControls_DdlLocation)_f.Controls[0].FindControl("ddl_location1")).SelectedText.ToLower().Trim() == "kelanis")
{
TBL_HZR_MAIN_RISKLEVEL newriskitem = new TBL_HZR_MAIN_RISKLEVEL();
newriskitem.code_hzrMain = id_hazard_report;
newriskitem.code_risk_level = int.Parse(((CustomControls_DdlRiskLevel)_f.Controls[0].FindControl("ddl_risklvl1")).SelectedValue);
dbcontext.TBL_HZR_MAIN_RISKLEVEL.Add(newriskitem);
}
#endregion
#region <upload file(s) and insert name to database />
// Get the HttpFileCollection
//if(Page.IsValid)
// {
// //your logic
// }
HttpFileCollection hfc = Request.Files;
if (hfc != null)
{
string cekDir = string.Format("{0}\\{1}", ConfigurationManager.AppSettings["docLoc"], id_hazard_report);
string PicDir;
if (Directory.Exists(cekDir)) //check Folder avlalible or not
{
PicDir = cekDir;
}
else
{
DirectoryInfo di = Directory.CreateDirectory(cekDir); // create Folder
PicDir = cekDir;
}
string fullname;
string filename;
//FileUpload FileUpload1 = (FileUpload)FormView1.FindControl("FileUpload1");
// string fileExt = Path.GetExtension(FileUpload1.FileName); //Get The File Extension
for (int i = 0; i < hfc.Count; i++)
{
HttpPostedFile hpf = hfc[i];
string fileExt = Path.GetExtension(hpf.FileName);
if (hpf.ContentLength >0)
{
///full path name to check exist or not
fullname = string.Format("{0}\\{1}", PicDir, Path.GetFileName(hpf.FileName.Replace(" ", "_")));
bool ex = File.Exists(fullname);
if (fileExt == (".jpg") || fileExt == (".gif") || fileExt == (".bmp") || fileExt == (".png") || fileExt == (".jpeg"))
{
if(hpf.ContentLength > 200000)/*(hpf.ContentLength > 200000)*/
{
ClientScript.RegisterStartupScript(Type.GetType("System.String"), "messagebox", "<script type=\"text/javascript\">alert('File Tidak boleh lebih dari 200 kb');</script>");
continue;
}
if (ex == true)
{
string f = Path.GetFileName(hpf.FileName.Replace(" ", "_"));
string[] a = new string[1];
a = f.Split('.');
filename = string.Format("{0}_{1}.{2}", a.GetValue(0), DateTime.Now.ToString("yymdHm"), a.GetValue(1));
}
else
{
filename = Path.GetFileName(hpf.FileName.Replace(" ", "_")).ToString();
}
///full path name to store in database with new filename
//string[] aa = new string[1];
//filename = string.Format("{0}_{1}.{2}", aa.GetValue(0), DateTime.Now.ToString("yymdHm"), aa.GetValue(1));
fullname = string.Format("{0}\\{1}", PicDir, filename);
hpf.SaveAs(fullname);
InsertHazardDoc(id_hazard_report, filename);
}
else
{
// FileUpload1.Focus();
ClientScript.RegisterStartupScript(Type.GetType("System.String"),"messagebox", "<script type=\"text/javascript\">alert('File Bukan Format Gambar');</script>");
continue;
}
}
//}
}
}
#endregion
//Page.DataBind();
myfb._success("Hazard Report Succesfully Inserted");
//after show notification above I want to clear data or reset
}
catch (Exception ex)
{
myfb._error(ex.ToString());
}
}
通知后我在哪里写重置代码myfb._success("Hazard Report Succesfully Inserted");
最佳答案
您可以使用 Response.Redirect(Request.RawUrl) 重新加载当前页面；
这将执行完整的回发并从头开始重新加载页面。如果您没有设置任何自定义代码，将您的值存储在某种缓存或 session 存储中，您的表单应该会恢复干净。
//更新:
如果您想显示某种成功消息，您可以将查询字符串附加到您的重定向。在我的示例中，我有一个文本框，它显示“它有效”和一个提交按钮，它执行重定向:
protected void Page_Load(object sender, EventArgs e)
{
if(Request.QueryString["success"] == "true")
{
//show success here
txtSuccess.Visible = true;
}
else
{
//set success invisible
txtSuccess.Visible = false;
}
}
protected void BtnSubmit_Click(object sender, EventArgs e)
{
var url = Request.RawUrl;
//check if querystring already present
if (url.IndexOf('?') == -1) {
//create a querystring
Response.Redirect($"{url}?success=true");
}
else
{
//append to existing querystring parameters
Response.Redirect($"{url}&success=true");
}
}
这是做什么的，它将一个成功的查询字符串参数附加到您的 url。它确实通过检查 url 中的 ? 字符来检查查询字符串是否已经存在。
然后它构建 url 并重定向。在您的 Page_Load 方法中，您只需检查该查询字符串。如果存在，则显示成功消息，如果不存在，则将其隐藏。
非常简单，但它完成了它的工作。
关于c# - 表单提交后清除(重置)表单字段(数据)，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/45157897/