通过从数据库加载数据来创建Gridview列标题
我想通过从表中检索数据来绑定我的网格列标题名称。 该表有两个字段，DomainID和DomainName，我想将DomainNames显示为Grid的Column标题。 实际上我正在创建员工网格视图。 我希望员工的所有域名都显示为标题，我必须在Checkbox中检查相应的域。
请给我一些想法。
提前致谢。
从我的理解….
- 制作网格视图
- 创建两列：a。 TextBoxColumn b。 CheckBoxColumn
- 使用.HeaderText属性设置列标题
- 将列添加到数据网格视图中
- 查询数据库并从中获取data_table
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使用dgv.DataSource = data_table将数据绑定到表或为data_table中的所有行创建for循环并显式添加每一行
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要使复选框工作，请处理数据网格视图的cellContentClick事件并在数据库中执行必要的更新…..
希望能帮助到你….
您可以将标头加载到DataTable ，然后使用自定义TemplateField动态创建它们。
这是aspx部分：
这是一个完整的示例：
public partial class GridTest : System.Web.UI.Page { protected void Page_Init(object sender, EventArgs e) { CreateGridColumns(); } protected void Page_Load(object sender, EventArgs e) { if (!IsPostBack) BindGrid(); } private void CreateGridColumns() { var tblDomain = GetDomains(); // Create dynamic TemplateFields foreach (DataRow row in tblDomain.Rows) { String domainName = row.Field("DomainName"); TemplateField field = new TemplateField(); //Initalize the DataField value. field.ItemTemplate = new GridViewCheckBoxTemplate(ListItemType.Item, domaninName); field.HeaderText = domainName; //Add the newly created field to the GridView. GridView1.Columns.Add(field); } } private DataTable GetDomains() { var tblDomain = new DataTable(); tblDomain.Columns.Add("DomainID", typeof(int)); tblDomain.Columns.Add("DomainName"); tblDomain.Rows.Add(1, "Google.com"); tblDomain.Rows.Add(2, "Yahoo.com"); tblDomain.Rows.Add(3, "Msn.com"); tblDomain.Rows.Add(4, "Youtube.com"); tblDomain.Rows.Add(5, "Myspace.com"); tblDomain.Rows.Add(6, "Facebook.com"); tblDomain.Rows.Add(7, "Wikipedia.org"); return tblDomain; } private void BindGrid() { var tblDomain = GetDomains(); // load domains from database or wherever var tblData = new DataTable();// load sample data tblData.Columns.Add("EmployeeID", typeof(int)); tblData.Columns.Add("EmployeeName"); //add domains as DataTable-Columns foreach (DataRow row in tblDomain.Rows) { String domaninName = row.Field ("DomainName"); //Add column from domain-name tblData.Columns.Add(domaninName, typeof(bool)); //CheckBox-Checked is a boolean } //get some Employees and random checked state var rnd = new Random(); var empRow = tblData.NewRow(); empRow["EmployeeID"] = 1; empRow["EmployeeName"] = "Jon"; foreach (DataRow dom in tblDomain.Rows) { empRow[dom.Field ("DomainName")] = rnd.Next(0, 2) == 0; } tblData.Rows.Add(empRow); empRow = tblData.NewRow(); empRow["EmployeeID"] = 2; empRow["EmployeeName"] = "Eric"; foreach (DataRow dom in tblDomain.Rows) { empRow[dom.Field ("DomainName")] = rnd.Next(0, 2) == 0; } tblData.Rows.Add(empRow); empRow = tblData.NewRow(); empRow["EmployeeID"] = 3; empRow["EmployeeName"] = "Alain"; foreach (DataRow dom in tblDomain.Rows) { empRow[dom.Field ("DomainName")] = rnd.Next(0, 2) == 0; } tblData.Rows.Add(empRow); GridView1.DataSource = tblData; GridView1.DataBind(); } // show how to retrieve all checkbox values and the according EmployeeID protected void BtnSave_Click(object sender, EventArgs e) { if (GridView1.Rows.Count == 0) return; var checkBoxColumns = GridView1.Columns.Cast() .Select((bf,index) => new{Field=bf, Index=index}) .Where(f => f.Field.GetType() == typeof(TemplateField) && ((TemplateField)f.Field).ItemTemplate.GetType() == typeof(GridViewCheckBoxTemplate)) .ToArray(); foreach (GridViewRow row in GridView1.Rows) { int EmployeeID = int.Parse(((HiddenField)row.FindControl("HiddenEmpID")).Value); foreach (var f in checkBoxColumns) { String domain = f.Field.HeaderText; bool isChecked = row.Controls[f.Index].Controls.OfType().First().Checked; } } } }
这是自定义ITemplate ：
public class GridViewCheckBoxTemplate : ITemplate { ListItemType _templateType; string _columnName; public GridViewCheckBoxTemplate(ListItemType type, string colname) { _templateType = type; _columnName = colname; } void ITemplate.InstantiateIn(System.Web.UI.Control container) { switch (_templateType) { case ListItemType.Header: break; case ListItemType.Item: var chb1 = new CheckBox(); chb1.DataBinding += new EventHandler(CB_DataBinding); container.Controls.Add(chb1); break; case ListItemType.EditItem: //As, I am not using any EditItem, I didnot added any code here. break; case ListItemType.Footer: break; } } void CB_DataBinding(object sender, EventArgs e) { CheckBox chb = (CheckBox)sender; GridViewRow container = (GridViewRow)chb.NamingContainer; object dataValue = ((DataRowView)container.DataItem)[_columnName]; chb.Checked = dataValue != DBNull.Value && (bool)dataValue; } }