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  • 实现Windows程序的数据绑定

    一.绑定下拉框数据

                     string sql = "select * from Grade";
                    SqlDataAdapter sda = new SqlDataAdapter(sql,helper.Con);
                    sda.Fill(ds,"Grade");
                    //新建一个下拉框选项
                    DataRow row = this.ds.Tables["Grade"].NewRow();
                    row[0] = -1;
                    row[1] = "请选择";
                    this.ds.Tables["Grade"].Rows.InsertAt(row,0);

                    //绑定下拉框
                    this.cbograde.DataSource=ds.Tables["Grade"];
                    this.cbograde.DisplayMember="GradeName";
                    this.cbograde.ValueMember="GradeId";



        二.绑定DataGradeView数据

                //根据年级查询GradeId
                string sql = "select * from Student where GradeId='" + this.cbograde.SelectedValue + "'";
                try
                {
                    studentsda = new SqlDataAdapter(sql, helper.Con);

                    if (ds.Tables["Student"] != null) {
                        ds.Tables["Student"].Clear();
                    }
                    studentsda.Fill(ds, "Student");
                    //绑定数据源和DataGradeView
                    this.dgvStudent.DataSource = ds.Tables["Student"];
                }
                catch (Exception x)
                {
                    MessageBox.Show(x.Message);
                }

        三.实现数据更新

                DialogResult result=MessageBox.Show("确定更改信息吗?","提示",MessageBoxButtons.YesNo,MessageBoxIcon.Information);
                if (result == DialogResult.Yes) {
                    SqlCommandBuilder scb = new SqlCommandBuilder(studentsda);
                    studentsda.Update(ds, "Student");
                }

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  • 原文地址:https://www.cnblogs.com/chx9832/p/9448434.html
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