pointInCell100是不是没有初始值,将Button1_Click里的这段代码放到Form_Load中试试。sqlDataAdapter1.Fill(dataSet1,"ROP");
sqlDataAdapter2.Fill(dataSet1,"DV");
dataGrid1.DataSource =dataSet1.Tables["DV];
this.dataGrid1.RowHeaderWidth = 50;
pointInCell00 = new Point(dataGrid1.GetCellBounds(0,0).X + 4, dataGrid1.GetCellBounds(0,0).Y + 4);
sqlDataAdapter2.Fill(dataSet1,"DV");
dataGrid1.DataSource =dataSet1.Tables["DV];
this.dataGrid1.RowHeaderWidth = 50;
pointInCell00 = new Point(dataGrid1.GetCellBounds(0,0).X + 4, dataGrid1.GetCellBounds(0,0).Y + 4);
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