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CODE:
StringBuilder s = new StringBuilder();
s.Append("<script language=javascript>");
s.Append("var a=window.showModalDialog('Default2.aspx');");
s.Append("if(a!=null)");
s.Append("document.all('TextBox1').value=a;");
s.Append("</script>");
Type cstype = this.GetType();
ClientScriptManager cs = Page.ClientScript;
string sname = "lt";
if (!cs.IsStartupScriptRegistered(cstype, sname))
cs.RegisterStartupScript(cstype, sname, s.ToString());
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CODE:
protected void Button1_Click(object sender, EventArgs e)
{
StringBuilder s = new StringBuilder();
s.Append("<script language=javascript>" + "\n");
s.Append("window.returnValue='" + this.GetSelectValue() + "';" + "\n");
s.Append("window.close();"+"\n");
s.Append("</script>");
Type cstype = this.GetType();
ClientScriptManager cs = Page.ClientScript;
string csname = "ltype";
if (!cs.IsStartupScriptRegistered(cstype, csname))
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