动态GridView查找控件模板字段 [英] Dynamic GridView find Control template Field
本文介绍了动态GridView查找控件模板字段的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！
问题描述
大家好，
我正在发布我的代码以找到对模板字段的控制.我无法在创建的Dynamic GridView中找到控件的模板字段.
Hi All,
I am posting my code to find control the template field. I am unable to find control the template field in the Dynamic GridView Created.
public void showgrid()
{
GridView1.DataSource = null;
GridView1.DataBind();
DataTable dt = new DataTable();
string box = "";
if (con.State == ConnectionState.Closed)
{
con.Open();
}
// SqlDataAdapter sda = new SqlDataAdapter();
string floor = "Select cFloors,cFlatPerFloor from tbl_tower where ProjectID ='" + DDProject.SelectedItem.Text + "' and towerNo='" + DDTower.SelectedItem.Text + "'";
DataTable dtv = sp.load_AnyTable(con, floor);
if (dtv.Rows.Count > 0)
{
string flatperfloor = dtv.Rows[0][1].ToString();
DataColumn Floor = new DataColumn("Floor", typeof(System.String));
dt.Columns.Add(Floor);
BoundField nameColumn = new BoundField();
nameColumn.DataField = "Floor";
nameColumn.HeaderText = "Floor";
nameColumn.ReadOnly = true;
GridView1.Columns.Add(nameColumn);
for (int c=1; c <=(Convert.ToInt16(flatperfloor)); c++)
{
DataColumn Unit1 = new DataColumn("Unit"+c, typeof(System.String));
dt.Columns.Add(Unit1);
}
string chk = "select Convert(int,floorNo) as FloorNo,UnitNo from tbl_tower_unit where ProjectID='" + DDProject.SelectedItem.Text + "' and towerNo='" + DDTower.SelectedItem.Text + "' and wingNo='" + DDWingNo.SelectedItem.Text + "' order by Convert(int,floorNo)";
DataTable dtchk = sp.load_AnyTable(con, chk);
int cFloor = Convert.ToInt16(dtv.Rows[0][0].ToString());
for (int i=0; i <cFloor; i++)
{
dt.Rows.Add(i);
int z = 1;
for(int unitno=0;unitno<dtchk.Rows.Count;unitno++)
{
if(dtchk.Rows[unitno][0].ToString()==i.ToString())
{
dt.Rows[i][z]=dtchk.Rows[unitno][1].ToString();
z++;
box = dt.Rows[i][z].ToString();
}
}
}
int p = 0;
foreach (DataColumn col in dt.Columns)
{
if (p != 0)
{
TemplateField tf = new TemplateField();
tf.HeaderTemplate = new GridViewTemplate(ListItemType.Header, col.ColumnName);
tf.ItemTemplate = new GridViewTemplate(ListItemType.Item, col.ColumnName);
GridView1.Columns.Add(tf);
}
p = 1;
}
p = 0;
}
//SqlCommand cmd = new SqlCommand(floor, con);
// //SqlCommand cmd = new SqlCommand();
// cmd.CommandType = CommandType.Text;
// //cmd.Connection = con;
// sda.SelectCommand = cmd;
// sda.Fill(dtv);
ViewState["GridTable"] = dt;
GridView1.DataSource = dt;
GridView1.DataBind();
StringBuilder sb = new StringBuilder();
for (int i = 0; i < GridView1.Rows.Count; i++)
{
GridViewRow row = (GridViewRow)GridView1.Rows[i];
for (int j = 0; j <GridView1.Columns.Count; j++)
{
//string field_value = ((TextBox)row.Cells[1].FindControl("Unit1")).Text;//.Rows[i].Cells[j].ToString()
//ParameterArray.Add(field_value);
//ImageButton Button1 = (ImageButton)sender;
//GridViewRow grdRow = (GridViewRow)Button1.Parent.Parent;
//string strField1 = ((Label)grdRow.Cells[0].FindControl("custID")).Text;
//if (GridView1.Rows[i].Cells[j].Text == box)
//{
GridView1.Rows[i].Cells[j].Enabled = false;
//}
//else
//{
// GridView1.Rows[i].Cells[j].Enabled = true;
//}
}
//TextBox txtunit1 = ((TextBox)GridView1.Rows[i].Cells[0].TemplateControl.ClientID("MyTextBox")) as TextBox;
//box = txtunit1.Text;
//txtunit1.Enabled = false;
}
}
我使用的类如下:
and the class I used for it is as follows:
//A customized class for displaying the Template Column
public class GridViewTemplate : ITemplate
{
//A variable to hold the type of ListItemType.
ListItemType _templateType;
//A variable to hold the column name.
string _columnName;
//Constructor where we define the template type and column name.
public GridViewTemplate(ListItemType type, string colname)
{
//Stores the template type.
_templateType = type;
//Stores the column name.
_columnName = colname;
}
void ITemplate.InstantiateIn(System.Web.UI.Control container)
{
switch (_templateType)
{
case ListItemType.Header:
//Creates a new label control and add it to the container.
Label lbl = new Label(); //Allocates the new label object.
lbl.Text = _columnName; //Assigns the name of the column in the lable.
container.Controls.Add(lbl); //Adds the newly created label control to the container.
break;
case ListItemType.Item:
//Creates a new text box control and add it to the container.
TextBox tb1 = new TextBox(); //Allocates the new text box object.
tb1.DataBinding += new EventHandler(tb1_DataBinding); //Attaches the data binding event.
tb1.Columns = 4; //Creates a column with size 4.
//for (int i = 1; i <= tb1.Columns; i++)
//{
// tb1.ID = "MyTextBox" + i.ToString();
//}
container.Controls.Add(tb1); //Adds the newly created textbox to the container.
break;
//case ListItemType.Item1:
// Creates a new text box control and add it to the container.
// TextBox tb1 = new TextBox(); //Allocates the new text box object.
// tb1.DataBinding += new EventHandler(tb1_DataBinding); //Attaches the data binding event.
// tb1.Columns = 4; //Creates a column with size 4.
// container.Controls.Add(tb1); //Adds the newly created textbox to the container.
// break;
case ListItemType.EditItem:
//As, I am not using any EditItem, I didnot added any code here.
break;
case ListItemType.Footer:
CheckBox chkColumn = new CheckBox();
chkColumn.ID = "Chk" + _columnName;
container.Controls.Add(chkColumn);
break;
}
}
/// <summary>
/// This is the event, which will be raised when the binding happens.
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
void tb1_DataBinding(object sender, EventArgs e)
{
TextBox txtdata = (TextBox)sender;
GridViewRow container = (GridViewRow)txtdata.NamingContainer;
object dataValue = DataBinder.Eval(container.DataItem, _columnName);
if (dataValue != DBNull.Value)
{
txtdata.Text = dataValue.ToString();
}
}
}
请你们中的任何人都可以回答我的问题吗?这个要求对我来说很紧急.:confused:
Please can anyone of you can answer my question? The requirement is urgent for me.:confused:
推荐答案
int p = 0;
foreach (DataColumn col in dt.Columns)
{
if (p != 0)
{
TemplateField tf = new TemplateField();
tf.HeaderTemplate = new GridViewTemplate(ListItemType.Header, col.ColumnName);
tf.ItemTemplate = new GridViewTemplate(ListItemType.Item, col.ColumnName);
GridView1.Columns.Add(tf);
}
p = 1;
}
p = 0;
不明白您为什么要使用"p".
首先，u分配p = 0，然后在foreach循环中检查p！= 0.每次都不会在第一列满足此条件.
此处可能存在一些错误.
did''nt understand why you r using ''p''.
First u are assigning p=0 then in foreach loop, checking whether p!=0. This condition will not get fulfilled for the first column each time.
There may be some mistake over here.
嘿，我遇到同样的问题，苦苦挣扎了两天，终于解决了.
page_Init我们需要重新绑定模板控件....
Hey I had the same issue struggled for two days , finally got it working .
page_Init we need to rebind the templete controls....
GridView.Columns.Clear();
for (int colcount = 0; colcount < dtPatterns.Columns.Count; colcount++)
{
TemplateField ItemTmpField = new TemplateField();
// create the header
ItemTmpField.HeaderTemplate =
new DynamicallyTemplatedGridViewHandler(ListItemType.Header,
dt.Columns[colcount].ColumnName,
dt.Columns[colcount].DataType.Name, iseditMode);
// create ItemTemplate
ItemTmpField.ItemTemplate =
new DynamicallyTemplatedGridViewHandler(ListItemType.Item,
dt.Columns[colcount].ColumnName,
dt.Columns[colcount].DataType.Name, iseditMode);
// create EditItemTemplate
ItemTmpField.EditItemTemplate =
new DynamicallyTemplatedGridViewHandler(ListItemType.EditItem,
dt.Columns[colcount].ColumnName,
dt.Columns[colcount].DataType.Name, iseditMode);
ItemTmpField.HeaderStyle.Width = Unit.Percentage(90 / dtPatterns.Columns.Count);
ItemTmpField.HeaderStyle.Font.Bold = true;
PatternGridView.Columns.Add(ItemTmpField);
// tf.HeaderStyle.Font.Bold = true;
// tf.HeaderStyle.Width = Unit.Percentage(90 / dtPatterns.Columns.Count);
}
PatternGridView.DataSource = dt;
PatternGridView.DataBind();
这篇关于动态GridView查找控件模板字段的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！
查看全文
