We have three country buttons, if we click any button that country information should only display?

Apex:

public class coun {

    public Boolean hide = false;

    public Boolean hide1 = false;

    public Boolean hide2 = false;

    

    public void setMhide(Boolean b) {

    this.hide = b;

    }

    

    public Boolean getMhide() {

    return this.hide;

    }//Passing input dynamically through another method

    

    

    public Boolean getM1hide() {

        return this.hide2;

    }

    

    public void setM1hide(Boolean b) {

      this.hide2 = b;  

    }

    

    

    public Boolean getM2hide() {

        return this.hide1;

    }

    

    public void setM2hide(Boolean b) {

        this.hide1 = b;

    }

    

    

    public PageReference india() {
        setMhide(true);
        setM2hide(false);
        setM1hide(false);     
        return null;
    }//displaying only india information and hiding other information

    

     public PageReference us() {

        setM1hide(true);

        setM2hide(false);

        setMhide(false);

        return null;

    }

    

    public PageReference uk() {

        setM2hide(true);

        setM1hide(false);

        setMhide(false);

        return null;

    }   

    

}

Vf Page:

<apex:page controller="coun">

<apex:form >

<apex:commandButton value="India" action="{!india}" reRender="India,Us,Uk"/>

<apex:commandButton value="Us" action="{!us}" reRender="India,Us,Uk"/>

<apex:commandButton value="Uk" action="{!uk}" reRender="India,Us,Uk"/>

<apex:pageBlock >

<apex:outputPanel id="India">
<apex:pageBlockSection title="India" rendered="{!mhide}">
</apex:pageBlockSection>
</apex:outputPanel>

<apex:outputpanel id="Us">

<apex:pageBlockSection title="US" rendered="{!m1hide}">

</apex:pageBlockSection>

</apex:outputpanel>

<apex:outputpanel id="Uk">

<apex:pageBlockSection title="UK" rendered="{!m2hide}">

</apex:pageBlockSection>

</apex:outputpanel>

</apex:pageBlock>

</apex:form>

</apex:page>

How To retrieve the records of the custom/standard object of the current user?

Solution:

Id aid = Userinfo.getUserId();

account ac = [Select Id, Name from Account Where CreatedById = : aid limit 1];

System.debug(' ---- ' + ac );

or

Id aid = Userinfo.getUserId();

List<Account> ac = [Select Id, Name From Account Where CreatedById = : aid Limit 10000];  

Custom Multi-Select picklist field in Visualforce?

There are several scenarios, where in we might have used input field for getting multi-select picklist field. What if you can’t really use an input field, here is the example code which will solve these type of problems.

VFPage Code:

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<apex:page controller="multiselect">     <apex:form >         <apex:panelGrid columns="3" id="abcd">             <apex:selectList id="sel1" value="{!leftselected}" multiselect="true" style="width:100px" size="5">                 <apex:selectOptions value="{!unselectedvalues}" />             </apex:selectList>                 <apex:panelGroup >                     <br/>                     <apex:image value="{!$Resource.multiselected}">                         <apex:actionSupport event="onclick" action="{!selectclick}" reRender="abcd"/>                     </apex:image>                     <br/><br/>                     <apex:image value="{!$Resource.multiunselected}">                         <apex:actionSupport event="onclick" action="{!unselectclick}" reRender="abcd"/>                     </apex:image>                 </apex:panelGroup>             <apex:selectList id="sel2" value="{!rightselected}" multiselect="true" style="width:100px" size="5">                 <apex:selectOptions value="{!SelectedValues}" />             </apex:selectList>         </apex:panelGrid>     </apex:form> </apex:page>

Controller Code:

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public class multiselect {     Set<String> originalvalues = new Set<String>{'A','B','C','D','E','F','G'};     Public List<string> leftselected{get;set;}     Public List<string> rightselected{get;set;}     Set<string> leftvalues = new Set<string>();     Set<string> rightvalues = new Set<string>();           public multiselect(){         leftselected = new List<String>();         rightselected = new List<String>();         leftvalues.addAll(originalValues);     }           public PageReference selectclick(){         rightselected.clear();         for(String s : leftselected){             leftvalues.remove(s);             rightvalues.add(s);         }         return null;     }           public PageReference unselectclick(){         leftselected.clear();         for(String s : rightselected){             rightvalues.remove(s);             leftvalues.add(s);         }         return null;     }     public List<SelectOption> getunSelectedValues(){         List<SelectOption> options = new List<SelectOption>();         List<string> tempList = new List<String>();         tempList.addAll(leftvalues);         tempList.sort();         for(string s : tempList)             options.add(new SelectOption(s,s));         return options;     }     public List<SelectOption> getSelectedValues(){         List<SelectOption> options1 = new List<SelectOption>();         List<string> tempList = new List<String>();         tempList.addAll(rightvalues);         tempList.sort();         for(String s : tempList)             options1.add(new SelectOption(s,s));         return options1;     } }