editmajor.ascx.cs

学生成绩管理系统

using System;
using System.Data;
using System.Configuration;
using System.Collections;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Web.UI.HtmlControls;
using TeachHelper.BusinessLogicLayer;
using TeachHelper.Comm;

public partial class TeachHelper_Controls_EditMajor : System.Web.UI.UserControl
{
    int departmentId;
    int majorId;
    string majorName;

    protected void Page_Load(object sender, EventArgs e)
    {
        if (!IsPostBack)
        {
            this.DropDownListDepartment.DataBind();
            BindData();
        }        
    }

    protected void DropDownListDepartment_SelectedIndexChanged(object sender, EventArgs e)
    {
        BindData();
    }

    protected void GridViewMajor_RowDataBound(object sender, GridViewRowEventArgs e)
    {
        if (e.Row.RowType == DataControlRowType.DataRow)
        {
            //e.Row.Attributes.Add("onmouseout", "this.style.backgroundColor=\"" + e.Row.Style["BACKGROUND-COLOR"] + "\"");
            //e.Row.Attributes.Add("onmouseover", "this.style.backgroundColor=\"" + "#add816" + "\"");
            if (e.Row.Cells[3].Controls.Count > 0)
            {
                ((ImageButton)(e.Row.Cells[3].Controls[0])).Attributes.Add("onclick", "return confirm('确定要删除吗?')");
            }
        } 
    }

    protected void GridViewMajor_RowEditing(object sender, GridViewEditEventArgs e)
    {
        ((GridView)sender).EditIndex = e.NewEditIndex;
        BindData();
    }

    protected void GridViewMajor_RowUpdating(object sender, GridViewUpdateEventArgs e)
    {
        int index = Convert.ToInt32(e.RowIndex);
        GridViewRow row = ((GridView)sender).Rows[index];
        int id = Convert.ToInt32(Server.HtmlDecode(row.Cells[0].Text.Trim()));
        string name = ((TextBox)row.Cells[1].Controls[0]).Text.Trim();

        if (string.IsNullOrEmpty(name))
        {
            MessageBox.Show(this.Page, "名字不能为空");
        }
        else
        {

            try
            {
                Major.Update(id, name);
                ReturnBrowseMode();
            }
            catch (Exception ex)
            {
                MessageBox.Show(this.Page, ex.Message);                
            }
        }
    }

    protected void GridViewMajor_RowDeleting(object sender, GridViewDeleteEventArgs e)
    {
        int index = Convert.ToInt32(e.RowIndex);
        GridViewRow row = ((GridView)sender).Rows[index];
        int id = Convert.ToInt32(Server.HtmlDecode(row.Cells[0].Text.Trim()));

        try
        {
            Major.Delete(id);
        }
        catch (Exception ex)
        {
            MessageBox.Show(this.Page, ex.Message);
        } 
    }

    protected void GridViewMajor_RowCancelingEdit(object sender, GridViewCancelEditEventArgs e)
    {
        ReturnBrowseMode();
    }

    protected void GridViewMajor_PageIndexChanging(object sender, GridViewPageEventArgs e)
    {
        ((GridView)sender).PageIndex = e.NewPageIndex;
        BindData();
    }

    private void BindData()
    {
        departmentId = Convert.ToInt32(this.DropDownListDepartment.SelectedValue.Trim());
        this.GridViewMajor.DataSource = Major.GetCollectByDepartmentId(departmentId);
        this.GridViewMajor.DataBind();
    }

    private void ReturnBrowseMode()
    {
        this.GridViewMajor.EditIndex = -1;
        BindData();
    }

}