質問編集履歴
1
サンプルソースにConnectionのOpen()が抜けていたため追記しました。
test
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File without changes
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test
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@@ -42,13 +42,17 @@
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42
42
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{
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44
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45
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+
con.Open();
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46
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47
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48
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45
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var command = con.CreateCommand();
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command.CommandText = "select * from XXX";
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51
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-
var reader = command.ExecuteReader()
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55
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+
var reader = command.ExecuteReader();
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