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546 point Member
-
jayu
- Member since 04-06-2006, 9:19 AM
- Ahmedabad
- Posts 141
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Dear All,
I have develop one Dateselector control, i have put direct on page this is working fine
but i have put page in to Master page and put Dateselector control then not call only this event "
bool LoadPostData(string postKey, NameValueCollection postData)"
if you any idea then please help me.........
Code of page..........
using System;
using System.Collections.Specialized;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Text;
namespace CIPL.CustomControls
{
public class DateSelector1 : WebControl, IPostBackDataHandler
{
protected string CRLF = "\n";
public DateTime Value
{
get
{
if (ViewState["Value"] == null)
ViewState[ "Value"] = DateTime.Now;
return (DateTime)ViewState["Value"]; }
set { ViewState["Value"] = value; }
}
public int MinYear
{
get
{
if (ViewState["MinYear"] == null)
{
if (Context != null)
ViewState[ "MinYear"] = DateTime.Today.Subtract(new TimeSpan(365*100, 0, 0, 0)).Year;
else
return 0;
}
return (int)ViewState["MinYear"];
}
set { ViewState["MinYear"] = value; }
}
public int MaxYear
{
get
{
if (ViewState["MaxYear"] == null)
ViewState[ "MaxYear"] = DateTime.Now.Year + 75;
return (int)ViewState["MaxYear"];
}
set { ViewState["MaxYear"] = value; }
}
public DateSelector1()
{}
public bool LoadPostData(string postKey, NameValueCollection postData)
{
if (Page.Request.Form[UniqueID + "_Year"] != null && Page.Request.Form[UniqueID + "_Month"] != null && Page.Request.Form[UniqueID + "_Day"] != null)
{
DateTime newVal = new DateTime(Int32.Parse(Page.Request.Form[UniqueID + "_Year"]), Int32.Parse(Page.Request.Form[UniqueID + "_Month"]), Int32.Parse(Page.Request.Form[UniqueID + "_Day"]));
if (newVal != Value)
{
Value = newVal;
return true;
}
}
return false;
}
public void RaisePostDataChangedEvent()
{
//...
}
protected override void OnPreRender(EventArgs e)
{
if (!Page.ClientScript.IsClientScriptBlockRegistered("DateSelector1")) //Page.IsClientScriptBlockRegistered("DateSelector1")
{
StringBuilder builder = new StringBuilder();
builder.Append( "<script language='JavaScript'>" + CRLF);
builder.Append( "/*" + CRLF);
builder.Append( "============================================================" + CRLF);
builder.Append( "DateSelector script" + CRLF);
builder.Append( "============================================================" + CRLF);
builder.Append( "*/" + CRLF);
builder.Append(CRLF);
builder.Append( "<!-- Begin" + CRLF);
builder.Append( "//set todays date" + CRLF);
builder.Append( " Now = new Date();" + CRLF);
builder.Append( "NowDay = Now.getDate();" + CRLF);
builder.Append( "NowMonth = Now.getMonth();" + CRLF);
builder.Append( "NowYear = Now.getYear();" + CRLF);
builder.Append( "if (NowYear < 2000) NowYear += 1900; //for Netscape" + CRLF);
builder.Append(CRLF);
builder.Append( "//function for returning how many days there are in a month including leap years" + CRLF);
builder.Append( "function DateSelector_DaysInMonth(WhichMonth, WhichYear)" + CRLF);
builder.Append( "{" + CRLF);
builder.Append( " var DaysInMonth = 31;" + CRLF);
builder.Append( " if (WhichMonth == \"Apr\" || WhichMonth == \"Jun\" || WhichMonth == \"Sep\" || WhichMonth == \"Nov\") DaysInMonth = 30;" + CRLF);
builder.Append( " if (WhichMonth == \"Feb\" && (WhichYear/4) != Math.floor(WhichYear/4)) DaysInMonth = 28;" + CRLF);
builder.Append( " if (WhichMonth == \"Feb\" && (WhichYear/4) == Math.floor(WhichYear/4)) DaysInMonth = 29;" + CRLF);
builder.Append( " return DaysInMonth;" + CRLF);
builder.Append( "}" + CRLF);
builder.Append(CRLF);
builder.Append( "//function to change the available days in a months" + CRLF);
builder.Append( "function DateSelector_ChangeOptionDays(Which)" + CRLF);
builder.Append( "{" + CRLF);
builder.Append( " DaysObject = eval(\"document.forms[0].\" + Which + \"_Day\");" + CRLF);
builder.Append( " MonthObject = eval(\"document.forms[0].\" + Which + \"_Month\");" + CRLF);
builder.Append( " YearObject = eval(\"document.forms[0].\" + Which + \"_Year\");" + CRLF);
builder.Append(CRLF);
builder.Append( "Month = MonthObject[MonthObject.selectedIndex].text;" + CRLF);
builder.Append( "Year = YearObject[YearObject.selectedIndex].text;" + CRLF);
builder.Append(CRLF);
builder.Append( "DaysForThisSelection = DateSelector_DaysInMonth(Month, Year);" + CRLF);
builder.Append( "CurrentDaysInSelection = DaysObject.length;" + CRLF);
builder.Append( "if (CurrentDaysInSelection > DaysForThisSelection)" + CRLF);
builder.Append( "{" + CRLF);
builder.Append( " for (i=0; i<(CurrentDaysInSelection-DaysForThisSelection); i++)" + CRLF);
builder.Append( " {" + CRLF);
builder.Append( " DaysObject.options[DaysObject.options.length - 1] = null" + CRLF);
builder.Append( " }" + CRLF);
builder.Append( "}" + CRLF);
builder.Append( "if (DaysForThisSelection > CurrentDaysInSelection)" + CRLF);
builder.Append( "{" + CRLF);
builder.Append( " for (i=0; i<(DaysForThisSelection-CurrentDaysInSelection); i++)" + CRLF);
builder.Append( " {" + CRLF);
builder.Append( " NewOption = new Option(DaysObject.options.length + 1);" + CRLF);
builder.Append( " DaysObject.add(NewOption);" + CRLF);
builder.Append( " }" + CRLF);
builder.Append( "}" + CRLF);
builder.Append( "if (DaysObject.selectedIndex < 0) DaysObject.selectedIndex == 0;" + CRLF);
builder.Append( "}" + CRLF);
builder.Append(CRLF);
builder.Append( "//function to set options to today" + CRLF);
builder.Append( "function DateSelector_SetToToday(Which)" + CRLF);
builder.Append( "{" + CRLF);
builder.Append( "DaysObject = eval(\"document.forms[0].\" + Which + \"_Day\");" + CRLF);
builder.Append( "MonthObject = eval(\"document.forms[0].\" + Which + \"_Month\");" + CRLF);
builder.Append( "YearObject = eval(\"document.forms[0].\" + Which + \"_Year\");" + CRLF);
builder.Append(CRLF);
builder.Append( "YearObject[0].selected = true;" + CRLF);
builder.Append( "MonthObject[NowMonth].selected = true;" + CRLF);
builder.Append(CRLF);
builder.Append( "DateSelector_ChangeOptionDays(Which);" + CRLF);
builder.Append(CRLF);
builder.Append( "DaysObject[NowDay-1].selected = true;" + CRLF);
builder.Append( "}" + CRLF);
builder.Append(CRLF);
builder.Append( "//function to set options to today" + CRLF);
builder.Append( "function DateSelector_Set(Which, Day, Month, Year)" + CRLF);
builder.Append( "{" + CRLF);
builder.Append( "DaysObject = eval(\"document.forms[0].\" + Which + \"_Day\");" + CRLF);
builder.Append( "MonthObject = eval(\"document.forms[0].\" + Which + \"_Month\");" + CRLF);
builder.Append( "YearObject = eval(\"document.forms[0].\" + Which + \"_Year\");" + CRLF);
builder.Append(CRLF);
builder.Append( "for (x = 0; x < YearObject.options.length; x++)" + CRLF);
builder.Append( "{" + CRLF);
builder.Append( " if (YearObject[x].value == Year)" + CRLF);
builder.Append( " {" + CRLF);
builder.Append( " YearObject[x].selected = true;" + CRLF);
builder.Append( " }" + CRLF);
builder.Append( "}" + CRLF);
builder.Append( "" + CRLF);
builder.Append( "for (y = 0; y < MonthObject.options.length; y++)" + CRLF);
builder.Append( "{" + CRLF);
builder.Append( " if (MonthObject[y].value == Month)" + CRLF);
builder.Append( " MonthObject[y].selected = true;" + CRLF);
builder.Append( "}" + CRLF);
builder.Append( "" + CRLF);
builder.Append( "DateSelector_ChangeOptionDays(Which);" + CRLF);
builder.Append( "" + CRLF);
builder.Append( "for (z = 0; z < DaysObject.options.length; z++)" + CRLF);
builder.Append( "{" + CRLF);
builder.Append( " if (DaysObject[z].value == Day)" + CRLF);
builder.Append( " DaysObject[z].selected = true;" + CRLF);
builder.Append( "}" + CRLF);
builder.Append( "" + CRLF);
builder.Append( "}" + CRLF);
builder.Append( "" + CRLF);
builder.Append( "//function to disable date selector" + CRLF);
builder.Append( "function DateSelector_Disable(Which)" + CRLF);
builder.Append( "{" + CRLF);
builder.Append( "document.getElementById(Which + \"_Day\").disabled = true;" + CRLF);
builder.Append( "document.getElementById(Which + \"_Month\").disabled = true;" + CRLF);
builder.Append( "document.getElementById(Which + \"_Year\").disabled = true;" + CRLF);
builder.Append( "}" + CRLF);
builder.Append(CRLF);
builder.Append( "//function to enable date selector" + CRLF);
builder.Append( "function DateSelector_Enable(Which)" + CRLF);
builder.Append( "{" + CRLF);
builder.Append( "document.getElementById(Which + \"_Day\").disabled = false;" + CRLF);
builder.Append( "document.getElementById(Which + \"_Month\").disabled = false;" + CRLF);
builder.Append( "document.getElementById(Which + \"_Year\").disabled = false;" + CRLF);
builder.Append( "}" + CRLF);
builder.Append( "// End -->" + CRLF);
builder.Append( "</script>");
Page.RegisterClientScriptBlock( "DateSelector1", builder.ToString());
//Page.ClientScript.RegisterClientScriptBlock("DateSelector1", builder.ToString());
}
base.OnPreRender(e);
}
protected override void Render(HtmlTextWriter writer)
{
writer.Write( "<input type='hidden' name='{0}' id='{0}'>", this.ClientID);
writer.Write( "<SELECT name=\"{0}_Month\" id=\"{0}_Month\" onchange=\"DateSelector_ChangeOptionDays('{0}')\"{1}{2}>", ClientID, Enabled ? "" : " disabled", CssClass != String.Empty ? " class='" + CssClass + "'" : "");
writer.Write( "<OPTION value='1'>Jan</OPTION>");
writer.Write( "<OPTION value='2'>Feb</OPTION>");
writer.Write( "<OPTION value='3'>Mar</OPTION>");
writer.Write( "<OPTION value='4'>Apr</OPTION>");
writer.Write( "<OPTION value='5'>May</OPTION>");
writer.Write( "<OPTION value='6'>Jun</OPTION>");
writer.Write( "<OPTION value='7'>Jul</OPTION>");
writer.Write( "<OPTION value='8'>Aug</OPTION>");
writer.Write( "<OPTION value='9'>Sep</OPTION>");
writer.Write( "<OPTION value='10'>Oct</OPTION>");
writer.Write( "<OPTION value='11'>Nov</OPTION>");
writer.Write( "<OPTION value='12'>Dec</OPTION>");
writer.Write( "</SELECT>");
writer.Write( "<SELECT name=\"{0}_Day\" id=\"{0}_Day\" {1}{2}>", ClientID, Enabled ? "" : " disabled", CssClass != String.Empty ? " class='" + CssClass + "'" : "");
for (int d = 1; d <= 31; d++)
writer.Write( "<OPTION value='{0}'>{0}</OPTION>", d);
writer.Write( "</SELECT>");
writer.Write( "<SELECT name=\"{0}_Year\" id=\"{0}_Year\" onchange=\"DateSelector_ChangeOptionDays('{0}')\"{1}{2}>", ClientID, Enabled ? "" : " disabled", CssClass != String.Empty ? " class='" + CssClass + "'" : "");
for (int y = MinYear; y <= MaxYear; y++)
{
writer.Write( "<OPTION value='{0}'>{0}</OPTION>", y);
}
writer.Write( "</SELECT>");
writer.Write( "<script language=\"Javascript\">DateSelector_Set('{0}', {1}, {2}, {3});</script>", this.ClientID, this.Value.Day, this.Value.Month, this.Value.Year);
}
}
}
Warm Regards,
Jayu.
Impossible Is Nothing
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