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[英]How to display Gridview data based on Dropdown selection that exists on the Gridview itself?
[英]Display gridview row count based on dropdown selection
我正在使用此代码进行gridview计数并在页面加载时显示在标签中,并且工作正常。
页面加载:
int rowCount = dtDetails.Rows.Count;
lblTotalRows.Text = rowCount.ToString() + "records found";
我在gridview上方有一个下拉菜单,当我选择下拉菜单值时,行数必须根据下拉菜单中选择的值进行更改。
我怎么可能在下拉选中的索引更改中做到这一点
protected void ddlGroup_SelectedIndexChanged(object sender, EventArgs e)
{
DataTable dtGroup = DataRepository.GetGroup(ddlGroup.Text);
gvDetails.DataSource = dtGroup;
gvDetails.DataBind();
//Now how could I possible show the respective row counts in the label
}
protected void ddlGroup_SelectedIndexChanged(object sender, EventArgs e)
{
DataTable dtDept = DataRepository.GetDept(ddlGroup.Text, ddlDept.Text);
gvDetails.DataSource = dtDept;
gvDetails.DataBind();
//Now how could I possible show the respective row counts of both group and
dept row count since they are cascading dropdowns in the label
}
有什么建议么?
我倾向于制作一个SetData()方法,因此所有此类代码都放在一个地方。 因此,在这种情况下,我将:
protected void SetData(DataTable dtGroup)
{
// Bind the data to the grid
gvDetails.DataSource = dtGroup;
gvODetails.DataBind();
// Show row count
if (!dtGroup.Rows.Count.Equals(0))
lblTotalRows.Text = dtGroup.Rows.Count + " records found";
else
lblTotalRows.Text = "No records found";
}
这样,您只有一个位置可以完成所有“ bindind”操作,因此在Page_Load中,您可以仅调用此SetData()方法并传入数据表,而在SelectedIndexChanged上也是如此。
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