Watch whole example on YouTube.
3 ways to do that
1. add text box to master page
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<body>
<form id="form1" runat="server">
<div>
<asp:TextBox ID="TextBox1" runat="server"></asp:TextBox>
<asp:ContentPlaceHolder ID="ContentPlaceHolder1" runat="server">
</asp:ContentPlaceHolder>
</div>
</form>
2. In code behind of the master page add the following property
public TextBox TextBox
{
get { return this.TextBox1; }
}
3. In child page add the following code:
protected void Page_Load(object sender, EventArgs e)
{
Site1 m = Master as Site1;
m.TextBox.Text = "aaaaaaaaaaaaa";
}
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Another - better example
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1. add text box to master page
<body>
<form id="form1" runat="server">
<div>
<asp:TextBox ID="TextBox1" runat="server"></asp:TextBox>
<asp:ContentPlaceHolder ID="ContentPlaceHolder1" runat="server">
</asp:ContentPlaceHolder>
</div>
</form>
2. In code behind of master page add the following property
public TextBox TextBox
{
get { return this.TextBox1; }
}
3. Add the following to html of child page
<%@ MasterType virtualpath="~/Site1.master" %>
4. In child page code behind add the following code
protected void Page_Load(object sender, EventArgs e)
{
Master.TextBox.Text = "BBB:";
}
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By referenece
__________________________________________________________________________
1. add text box to master page
<body>
<form id="form1" runat="server">
<div>
<asp:TextBox ID="TextBox1" runat="server"></asp:TextBox>
<asp:ContentPlaceHolder ID="ContentPlaceHolder1" runat="server">
</asp:ContentPlaceHolder>
</div>
</form>
2.In child page code behind add the following code
protected void Page_Load(object sender, EventArgs e)
{
TextBox tb;
tb = (TextBox)Master.FindControl("TextBox1");
tb.Text = "BBB";
}
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