C # a drop-down box string collection how assignment respectively 1, 2, 3, 4, 5 a, b, c, d, e-CodePudding

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C # a drop-down box string collection how assignment respectively 1, 2, 3, 4, 5 a, b, c, d, e

Time：01-19

In vs2010 operation has defined variable for the line, the drop-down box to choose 1 line for a

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Each name main connection is essentially a database, the database name letters have underlined