C# 在单元格中找不到任何控件 private void btnSaveStudy\u单击（对象发送方，事件参数e） { string valueFromlbl=string.Empty； for（int i=0；i
以root用户身份传入页面，查看您要查找的控件是否返回C# 在单元格中找不到任何控件 private void btnSaveStudy\u单击（对象发送方，事件参数e） { string valueFromlbl=string.Empty； for（int i=0；i,c#,asp.net,C#,Asp.net,以root用户身份传入页面，查看您要查找的控件是否返回 private void btnSaveStudy_Click(object sender, EventArgs e) { string valueFromlbl = string.Empty; for(int i = 0; i < tableContent.Rows.Count; i++) { for(i
private void btnSaveStudy_Click(object sender, EventArgs e)
{
string valueFromlbl = string.Empty;
for(int i = 0; i < tableContent.Rows.Count; i++)
{
for(int j = 0; j < tableContent.Rows[i].Cells.Count; j++)
{
foreach(Control ctrl in tableContent.Rows[i].Cells[j].Controls)
{
Label lbl = ctrl as Label;
if(lbl != null)
{
valueFromlbl = lbl.Text;
}
}
}
}
}
protected void Page_Load(object sender, EventArgs e)
{
HtmlTable table = null;
HtmlTableRow row = null;
HtmlTableCell cell = null;
studyNumber = studyNumber + 1;
uniqueID = uniqueID + 1;
for(int i = 0; i < 5; i++)
{
table = new HtmlTable();
row = new HtmlTableRow();
tableContent.Controls.AddAt(i, row);
for(int j = 0; j < 3; j++)
{
cell = new HtmlTableCell();
cell.Attributes.Add("Class", "csstablelisttd");
row.Attributes.Add("Class", "csstextheader");
row.Controls.AddAt(j, cell);
if(i == 0 && j == 0)
{
cell.InnerText = "Study : " + Convert.ToInt32(studyNumber);
}
else if(i == 1 && j == 0)
{
cell.InnerText = "Modality" + " : " + modality;
}
else if(i == 2 && j == 0)
{
cell.InnerText = "Start Date" + " : " + DateTime.Now.ToString("dd-MMM-yyyy");
}
else if(i == 3 && j == 0)
{
cell.InnerText = "Accession Number" + " : " + accessionNumber;
}
else if(i == 4 && j == 0)
{
Button btnSaveStudy = new Button();
btnSaveStudy.ID = "btnSaveStudy" + uniqueID;
btnSaveStudy.Text = "Save";
btnSaveStudy.Attributes.Add("Class", "cssbutton");
cell.Controls.Add(btnSaveStudy);
btnSaveStudy.Click += new EventHandler(btnSaveStudy_Click);
}
if(i == 1 && j == 1)
{
cell.InnerText = "AE Title" + " : " + schedule_Station_AE_Title;
}
else if(i == 1 && j == 2)
{
cell.InnerText = "Station Name" + " : " + schedule_Station_Name;
}
else if(i == 2 && j == 1)
{
cell.InnerText = "Start time" + " : " + startTime;
}
else if(i == 3 && j == 1)
{
cell.InnerText = "End time" + " : " + endTime;
}
else if(i == 2 && j == 2)
{
Label lblPriority = new Label();
lblPriority.ID = "lblPriority" + uniqueID;
lblPriority.Text = "Priority : ";
DropDownList ddlPriority = new DropDownList();
ddlPriority.ID = "ddlPriority" + uniqueID;
ddlPriority.Attributes.Add("Class", "csstextbox");
ddlPriority.Items.Add(new ListItem("MEDIUM", "4"));
ddlPriority.Items.Add(new ListItem("STAT", "1"));
ddlPriority.Items.Add(new ListItem("HIGH", "2"));
ddlPriority.Items.Add(new ListItem("ROUTINE", "3"));
ddlPriority.Items.Add(new ListItem("LOW", "5"));
cell.Controls.Add(lblPriority);
cell.Controls.Add(ddlPriority);
}
else if(i == 3 && j == 2)
{
Label lblStudy = new Label();
lblStudy.ID = "lblStudy" + uniqueID;
lblStudy.Text = "Study : ";
DropDownList ddlStudyList = new DropDownList();
ddlStudyList = BindStudy(ddlStudyList, Convert.ToInt32(acqModalityID), uniqueID);
ddlStudyList.Attributes.Add("Class", "csstextbox");
cell.Controls.Add(lblStudy);
cell.Controls.Add(ddlStudyList);
}
}
}
}}
I have added controls to table cell but not find any control
以根用户身份传入页面，查看您要查找的控件是否返回
private void btnSaveStudy_Click(object sender, EventArgs e)
{
string valueFromlbl = string.Empty;
for(int i = 0; i < tableContent.Rows.Count; i++)
{
for(int j = 0; j < tableContent.Rows[i].Cells.Count; j++)
{
foreach(Control ctrl in tableContent.Rows[i].Cells[j].Controls)
{
Label lbl = ctrl as Label;
if(lbl != null)
{
valueFromlbl = lbl.Text;
}
}
}
}
}
protected void Page_Load(object sender, EventArgs e)
{
HtmlTable table = null;
HtmlTableRow row = null;
HtmlTableCell cell = null;
studyNumber = studyNumber + 1;
uniqueID = uniqueID + 1;
for(int i = 0; i < 5; i++)
{
table = new HtmlTable();
row = new HtmlTableRow();
tableContent.Controls.AddAt(i, row);
for(int j = 0; j < 3; j++)
{
cell = new HtmlTableCell();
cell.Attributes.Add("Class", "csstablelisttd");
row.Attributes.Add("Class", "csstextheader");
row.Controls.AddAt(j, cell);
if(i == 0 && j == 0)
{
cell.InnerText = "Study : " + Convert.ToInt32(studyNumber);
}
else if(i == 1 && j == 0)
{
cell.InnerText = "Modality" + " : " + modality;
}
else if(i == 2 && j == 0)
{
cell.InnerText = "Start Date" + " : " + DateTime.Now.ToString("dd-MMM-yyyy");
}
else if(i == 3 && j == 0)
{
cell.InnerText = "Accession Number" + " : " + accessionNumber;
}
else if(i == 4 && j == 0)
{
Button btnSaveStudy = new Button();
btnSaveStudy.ID = "btnSaveStudy" + uniqueID;
btnSaveStudy.Text = "Save";
btnSaveStudy.Attributes.Add("Class", "cssbutton");
cell.Controls.Add(btnSaveStudy);
btnSaveStudy.Click += new EventHandler(btnSaveStudy_Click);
}
if(i == 1 && j == 1)
{
cell.InnerText = "AE Title" + " : " + schedule_Station_AE_Title;
}
else if(i == 1 && j == 2)
{
cell.InnerText = "Station Name" + " : " + schedule_Station_Name;
}
else if(i == 2 && j == 1)
{
cell.InnerText = "Start time" + " : " + startTime;
}
else if(i == 3 && j == 1)
{
cell.InnerText = "End time" + " : " + endTime;
}
else if(i == 2 && j == 2)
{
Label lblPriority = new Label();
lblPriority.ID = "lblPriority" + uniqueID;
lblPriority.Text = "Priority : ";
DropDownList ddlPriority = new DropDownList();
ddlPriority.ID = "ddlPriority" + uniqueID;
ddlPriority.Attributes.Add("Class", "csstextbox");
ddlPriority.Items.Add(new ListItem("MEDIUM", "4"));
ddlPriority.Items.Add(new ListItem("STAT", "1"));
ddlPriority.Items.Add(new ListItem("HIGH", "2"));
ddlPriority.Items.Add(new ListItem("ROUTINE", "3"));
ddlPriority.Items.Add(new ListItem("LOW", "5"));
cell.Controls.Add(lblPriority);
cell.Controls.Add(ddlPriority);
}
else if(i == 3 && j == 2)
{
Label lblStudy = new Label();
lblStudy.ID = "lblStudy" + uniqueID;
lblStudy.Text = "Study : ";
DropDownList ddlStudyList = new DropDownList();
ddlStudyList = BindStudy(ddlStudyList, Convert.ToInt32(acqModalityID), uniqueID);
ddlStudyList.Attributes.Add("Class", "csstextbox");
cell.Controls.Add(lblStudy);
cell.Controls.Add(ddlStudyList);
}
}
}
}}
I have added controls to table cell but not find any control
您只是忘记了将表本身添加到页面的控件集合中
private Control FindControlRecursive(Control rootControl, string controlID)
{
if (rootControl.ID == controlID) return rootControl;
foreach (Control controlToSearch in rootControl.Controls)
{
Control controlToReturn =
FindControlRecursive(controlToSearch, controlID);
if (controlToReturn != null) return controlToReturn;
}
return null;
}
（最好将其添加到容器控件中，如
占位符面板private Control FindControlRecursive(Control rootControl, string controlID)
{
if (rootControl.ID == controlID) return rootControl;
foreach (Control controlToSearch in rootControl.Controls)
{
Control controlToReturn =
FindControlRecursive(controlToSearch, controlID);
if (controlToReturn != null) return controlToReturn;
}
return null;
}
（最好将其添加到容器控件中，如
占位符面板