Runat = no solution for saving and modifying server control values

This article briefly introduces no solution for saving and modifying runat = server control values. This is a problem for beginners. If you need it, please refer to it.

The Code is as follows:

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Function Save () // Save a value that is not a Server Control Value { Var 1 = document. getElementById ('1box'). value; Var 2 = document. getElementById ('2box'). value; Var TxtValue = 1 + "■" + 2; Document. getElementById ('3). value = TxtValue; Return true; } Window. onload = function show () { Var TxtValue = document. getElementById ('3). value; If (TxtValue! = ""){ EachValue = new Array (); EachValue = TxtValue. split ('■ '); Document. getElementById ('1box'). value = EachValue [0]; Document. getElementById ('2box'). value = EachValue [1]; } Return true; } html： <input type="text" id="1Box" class="txt-underline" style="width: 60px;text-align:left " maxlength="10"/> <input type="text" id="2Box" class="txt-underline" style="width: 200px;text-align:left" maxlength="30"/> <input type="hidden" id="3" name="Values" runat="server" />

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The Code is as follows:
    
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Void LoadData () // page loading
{
BtnSave. Attributes. Add ("onclick", "javascript: Save ();");
String [] strTxtValues = new string [2];
StrTxtValues [0] = dr ["1"]. ToString ();
StrTxtValues [1] = dr ["2"]. ToString ();


String strValues = strTxtValues [0];
For (int I = 1; I <strTxtValues. Length; I ++)
{
StrValues + = "■" + strTxtValues [I];
}
This.3.Value = strValues;
}
Private void SaveOrUpdate () // save and modify
{

String [] strTxtValues = this.3.Value. Split ('■ ');
String 1 = strTxtValues [0];

String 2 = strTxtValues [1];
}