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<HeaderTemplate>
<input type="checkbox" id="CheckBox1" name="CheckBox1" onclick="GetAllCheckBox(this)" />
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</HeaderTemplate>
<ItemTemplate>
<input type="checkbox" name="CheckBox2" />
</ItemTemplate>
<ItemStyle HorizontalAlign="Center" Width="100px" />
</asp:TemplateField>
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function GetAllCheckBox(checkAll){
var items = document.getElementsByName("CheckBox2");
for(var i=0;i<items.length;i++){
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string sql = "server=.;uid=sa;pwd=;database=tablename;";
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string sql = "PROVIDER=Microsoft.Jet.OLEDB.4.0;DATA Source=" + HttpRuntime.AppDomainAppPath + "//App_Data//db.mdb";
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