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CustomWebControlsLib

Posted by Nesreen Maged Articles | WebForms Controls May 22, 2009
This library contain four custom controls each control has the validations for required and character type
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Introduction

This library contain four custom controls each control has the validations for required and character type

  1. NumericTextBox

    this control validate on keypress the entered char and it's accept only numbers
     
  2. DecimalTextBox

    this control validate on keypress the entered char and it's accept only Decimal
     
  3. StringTextBox

    this control validate on keypress the entered char and it's accept allpha pluse according to it's property AllowSpace and AllowDigit it will accept the digit and space
     
  4. CustomTextBox

    this control has type property and according to it in validate the validation will occure before submit

    public enum TextBoxType
        {Text = 1, AlphaWithSpace = 2, lphaOnly=3, Nmeric=4, mail = 5, RL=6    }

How to use this controls

After drag the control on the page just set controls properties

<cc1:StringTextBox ID="StringTextBox1" runat="server" AllowDigit="true" AllowSpace="true"></cc1:StringTextBox>
cc1:CustomTextBox ID="CustomTextBox6"
  runat="server" TextType="AlphaWithSpace" InvalidRequiredMessage="*" ></cc1:CustomTextBox>


all these controls have a common properties which included in BaseCustomControl
InvalidRequiredMessage, EnableClientScript, IsRequired, CssClassTxt, CssClassErr

Code Sample

  1.    public class BaseCustomControl : TextBox
        {
       public string InvalidRequiredMessage
            {
                get
                {
     string s = "Required";
     object obj = ViewState["InvalidRequiredMessage"];
     if (obj != null)
     {
         s = (string)obj;
      }
     return s;
                }
     
                set
                {
     ViewState["InvalidRequiredMessage"] = value;
                }
            }
           public bool EnableClientScript
            {
                get
                {
     bool b = true;
     object obj = ViewState["EnableClientScript"];
     if (obj != null)
     {
         b = (bool)obj;

     }
     return b;
                }

                set
                {
     ViewState["EnableClientScript"] = value;
                }
            }
            public bool IsRequired
            {
                get
                {
     bool b = true;
     object obj = ViewState["IsRequired"];
     if (obj != null)
     {
         b = (bool)obj;

     }
     return b;
                }

                set
                {
     ViewState["IsRequired"] = value;
                }
            }
            public string CssClassTxt
            {
                get
                {
     string s = "txtCls";
     object obj = ViewState["CssClassTxt"];
     if (obj != null)
     {
         s = (string)obj;

     }
     return s;
                }

                set
                {
     ViewState["CssClassTxt"] = value;
     this.CssClass = value;
                }
            }
            public string CssClassErr
            {
                get
                {
     string s = "errCls";
     object obj = ViewState["CssClassErr"];
     if (obj != null)
     {
         s = (string)obj;
     }
     return s;
                }
                 set
                {
     ViewState["CssClassErr"] = value;
     
                }
            }
            protected override void OnInit(EventArgs e)
            {
                //check Required
                if (IsRequired)
                {
     req = new RequiredFieldValidator();
     req.ControlToValidate = this.ID;
     req.ErrorMessage = this.InvalidRequiredMessage;
     req.EnableClientScript = this.EnableClientScript;
     req.Display = ValidatorDisplay.Dynamic;
     req.CssClass = CssClassErr;
     Controls.Add(req);
                }
                CssClass = CssClassTxt;
     
           }
       protected override void Render(HtmlTextWriter output)
            {
    base.Render(output);
     
     if (req != null)
     {
         req.RenderControl(output);
     }
        }
    }
     

  2. CustomTextBox

    public enum TextBoxType
        {
            Text = 1,
            AlphaWithSpace = 2,
            AlphaOnly=3,
            Numeric=4,
            Email = 5,
            URL=6
       }

        public class CustomTextBox : BaseCustomControl
        {
            public string InvalidDataMessage
            {
                get
                {
     string s = "Invalid Data";
     object obj = ViewState["InvalidDataMessage"];
     if (obj != null)
     {
         s = (string)obj;

     }
     return s;
                }

                set
                {
     ViewState["InvalidDataMessage"] = value;
                }
            }

            public TextBoxType TextType
            {
                get
                {
     TextBoxType t = TextBoxType.AlphaOnly;
     object obj = ViewState["TextType"];
     if (obj != null)
     {
         t = (TextBoxType)obj;

     }
     return t;
                }
                set
                {
     ViewState["TextType"] = value;
                }
           protected override void OnInit(EventArgs e)
            {
                base.OnInit(e);
                reg = new RegularExpressionValidator();
                reg.ControlToValidate = this.ID;
                reg.ErrorMessage = this.InvalidDataMessage;
                reg.EnableClientScript = this.EnableClientScript;
                reg.Display = ValidatorDisplay.Dynamic;
                //check Type
                switch (TextType)
                {

      case TextBoxType.AlphaOnly:
         {
             reg.ValidationExpression = @"[a-zA-Z]*";
             break;
         }
     case TextBoxType.Numeric:
         {
             reg.ValidationExpression = @"[0-9]*";
             break;
         }

     case TextBoxType.AlphaWithSpace:
         {
             reg.ValidationExpression = @"[a-zA-Z ]*";
             break;
         }
     case TextBoxType.Text:
         {
             reg.ValidationExpression = @"[\w^\w\W^\W]*";
             break;
         }
     case TextBoxType.Email:
         {
             reg.ValidationExpression = @"\w+([-+.']\w+)*@\w+([-.]\w+)*\.\w+([-.]\w+)*";
             break;
         }
         
         case TextBoxType.URL:
         {
             reg.ValidationExpression = @"http(s)?://([\w-]+\.)+[\w-]+(/[\w- ./?%&=]*)?";
             break;
         }
               }

                Controls.Add(reg);
                #endregion
            }

            protected override void Render(HtmlTextWriter w)
            {
     base.Render(w);
     if (reg != null)
     {
         reg.RenderControl(w);
     }
            }
     

  3. DecimalTextBox

        public class DecimalTextBox : BaseCustomControl
        {
            protected override void OnInit(EventArgs e)
            {
                this.Attributes.Add("onkeypress", "javascript: return AllowDecimal(event,'"+this.ClientID+"');");
                base.OnInit(e);
            }
            protected override void  OnPreRender(EventArgs e)
    {f(!this.Page.ClientScript.IsClientScriptBlockRegistered("strAllowNumeric"))
     {
         string script = @"function AllowDecimal(e,txt)
         {
             var iKeyCode = 0;
             if (window.event)
             {
             iKeyCode = window.event.keyCode
             }
             else if (e)
             {
             iKeyCode = e.which;
             }
             var y = document.getElementById(txt).value;
             if(iKeyCode==46 && y.indexOf('.')==-1){ return true;}
             else if ((iKeyCode > 47 && iKeyCode < 58)|| iKeyCode==8)
             { return true;}
             else
             {return false;} }
    ;
    this.Page.ClientScript.RegisterClientScriptBlock(this.Page.GetType(), "strAllowDecimal", script,true);
     }
     base.OnPreRender(e);
                }
        }
    }

     

  4. NumricTextBox

        public class NumericTextBox : BaseCustomControl
        {
            protected override void OnInit(EventArgs e)
            {             this.Attributes.Add("onkeypress", "javascript: return AllowNumeric(event);");
                base.OnInit(e);

            protected override void  OnPreRender(EventArgs e)
    {if(!this.Page.ClientScript.IsClientScriptBlockRegistered("strAllowNumeric"))
     {
          string script = "function AllowNumeric(e)";
           script += "{";
           script += "var iKeyCode = 0;";
           script += "if (window.event)";
           script += "{iKeyCode = window.event.keyCode}";
           script += "else if (e)";
           script += "{iKeyCode = e.which;}";
           script += "if ((iKeyCode > 47 && iKeyCode < 58) || iKeyCode == 8||iKeyCode == 0)";
           script += "{ return true}";
           script += "else";
           script += "{return false;}";
           script += "}";
    this.Page.ClientScript.RegisterClientScriptBlock(this.Page.GetType(), "strAllowNumeric", script,true);

     }

     base.OnPreRender(e);

                }
                catch (Exception ex)
                {
     throw ex;
                }
             }

            #endregion
        }
    }

     

  5. StringTextBox

        public class StringTextBox : BaseCustomControl
        {
            public bool AllowAlpha
            {
                get
                {
     bool b = true;
     object obj = ViewState["AllowAlpha"];
     if (obj != null)
     {
         b = (bool)obj;

     }
     return b;
                }

                set
                {
     ViewState["AllowAlpha"] = value;
                }
            }

    public bool AllowSpace
            {
                get
                {
     bool b = false;
     object obj = ViewState["AllowSpace"];
     if (obj != null)
     {
         b = (bool)obj;
      }
     return b;
                }

                set
                {
     ViewState["AllowSpace"] = value;
                }
            }

            public bool AllowDigit
            {
                get
                {
     bool b = false;
     object obj = ViewState["AllowDigit"];
     if (obj != null)
     {
         b = (bool)obj;

     }
     return b;
                }
     
                set
                {
     ViewState["AllowDigit"] = value;
                }
            }

            protected override void OnInit(EventArgs e)
            {
                base.OnInit(e);
                if ((!AllowAlpha) && AllowDigit)
                {
     this.Attributes.Add("onkeypress", "javascript: return AllowDigit(event," + AllowSpace.ToString().ToLower() + ");");
                }
                else if (AllowAlpha)
                {
     this.Attributes.Add("onkeypress", "javascript: return AllowAlpha(event," + AllowSpace.ToString().ToLower() + "," + AllowDigit.ToString().ToLower() + ");");

                 }
                else
                {
     this.Enabled = false;
                }
            protected override void OnPreRender(EventArgs e)
            {
    string script1="<script language=javascript>";
     script1+="function AllowAlpha(e,allowSpace,allowDigit)";
     script1+="{";

     script1+="var KeyID = (window.event) ? event.keyCode : e.which;";
     script1+="if((KeyID >= 65 && KeyID <= 90)";
     script1+="|| (KeyID >= 97 && KeyID <= 122)";
     script1+="|| (KeyID >= 33 && KeyID <= 47)";
     script1+="||(KeyID >= 58 && KeyID <= 64)";
     script1+="|| (KeyID >= 91 && KeyID <= 96)";
     script1+="|| (KeyID ==32 && allowSpace)";
     script1+="|| (KeyID > 47 && KeyID < 58 && allowDigit)";
     script1+="|| (KeyID >= 123 && KeyID <= 126))";
     script1+="{return true;}";
     script1+="else";
     script1+="{return false;}";
     script1+="}";
     script1+="</script>";
     this.Page.ClientScript.RegisterClientScriptBlock(this.Page.GetType(), "strAllowAlpha", script1);
     if ((!AllowAlpha) && AllowDigit)
     {
        string script="<script language=javascript>";
        script+="function AllowDigit(e,allowSpace)";
        script+="{";
        script+="var iKeyCode = 0;";
        script+="if (window.event)";
        script+="{iKeyCode = window.event.keyCode}";
        script+="else if (e)";
        script+="{iKeyCode = e.which;}";
        script+="if ((iKeyCode > 47 && iKeyCode < 58)";
        script+="|| (iKeyCode ==32 && allowSpace))";
        script+="{ return true}";
        script+="else";
        script+="{return false;}";
        script+="}";
        script += "</script>";
        this.Page.ClientScript.RegisterClientScriptBlock(this.Page.GetType(), "strAllowDigit", script);

      }

      base.OnPreRender(e);

    }

    image1.gif

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